java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/doubleLoopUniformIterations.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:56:05,731 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:56:05,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:56:05,746 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:56:05,746 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:56:05,748 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:56:05,749 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:56:05,751 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:56:05,753 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:56:05,754 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:56:05,755 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:56:05,755 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:56:05,756 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:56:05,757 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:56:05,759 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:56:05,759 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:56:05,760 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:56:05,762 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:56:05,765 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:56:05,766 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:56:05,767 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:56:05,769 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:56:05,777 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:56:05,777 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:56:05,777 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:56:05,782 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:56:05,786 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:56:05,787 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:56:05,788 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:56:05,789 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:56:05,789 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:56:05,790 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 08:56:05,790 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 08:56:05,794 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 08:56:05,795 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 08:56:05,796 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 08:56:05,796 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:56:05,811 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:56:05,811 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:56:05,812 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:56:05,813 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:56:05,813 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:56:05,813 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:56:05,813 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:56:05,817 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:56:05,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:56:05,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:56:05,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:56:05,895 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:56:05,896 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:56:05,896 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/doubleLoopUniformIterations.bpl [2018-07-25 08:56:05,897 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/doubleLoopUniformIterations.bpl' [2018-07-25 08:56:05,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:56:05,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:56:05,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:56:05,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:56:05,946 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:56:05,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/1) ... [2018-07-25 08:56:05,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/1) ... [2018-07-25 08:56:05,989 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:56:05,989 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:56:05,989 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:56:05,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:56:05,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:56:05,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:56:05,993 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:56:06,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/1) ... [2018-07-25 08:56:06,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/1) ... [2018-07-25 08:56:06,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/1) ... [2018-07-25 08:56:06,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/1) ... [2018-07-25 08:56:06,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/1) ... [2018-07-25 08:56:06,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/1) ... [2018-07-25 08:56:06,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/1) ... [2018-07-25 08:56:06,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:56:06,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:56:06,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:56:06,023 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:56:06,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/1) ... [2018-07-25 08:56:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure Main [2018-07-25 08:56:06,119 INFO L138 BoogieDeclarations]: Found implementation of procedure Main [2018-07-25 08:56:06,280 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:56:06,281 INFO L202 PluginConnector]: Adding new model doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:56:06 BoogieIcfgContainer [2018-07-25 08:56:06,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:56:06,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:56:06,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:56:06,286 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:56:06,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:56:05" (1/2) ... [2018-07-25 08:56:06,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22fda9d4 and model type doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:56:06, skipping insertion in model container [2018-07-25 08:56:06,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:56:06" (2/2) ... [2018-07-25 08:56:06,291 INFO L112 eAbstractionObserver]: Analyzing ICFG doubleLoopUniformIterations.bpl [2018-07-25 08:56:06,305 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:56:06,317 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-07-25 08:56:06,375 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:56:06,376 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:56:06,376 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:56:06,376 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:56:06,376 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:56:06,377 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:56:06,377 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:56:06,377 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:56:06,377 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:56:06,400 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 08:56:06,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:56:06,412 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,414 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:56:06,415 INFO L415 AbstractCegarLoop]: === Iteration 1 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,422 INFO L82 PathProgramCache]: Analyzing trace with hash 926725, now seen corresponding path program 1 times [2018-07-25 08:56:06,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,521 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:56:06,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 08:56:06,526 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:56:06,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:56:06,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:56:06,545 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-07-25 08:56:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,580 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2018-07-25 08:56:06,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:56:06,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 08:56:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,593 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:56:06,593 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:56:06,597 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:56:06,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:56:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:56:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:56:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-07-25 08:56:06,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 4 [2018-07-25 08:56:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,647 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-07-25 08:56:06,648 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:56:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2018-07-25 08:56:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:56:06,648 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,649 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-25 08:56:06,649 INFO L415 AbstractCegarLoop]: === Iteration 2 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,649 INFO L82 PathProgramCache]: Analyzing trace with hash 28728519, now seen corresponding path program 1 times [2018-07-25 08:56:06,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,661 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:56:06,661 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-25 08:56:06,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:56:06,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:56:06,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:56:06,668 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 3 states. [2018-07-25 08:56:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,688 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 08:56:06,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:56:06,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-07-25 08:56:06,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,692 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:56:06,692 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:56:06,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:56:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:56:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:56:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:56:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-07-25 08:56:06,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-07-25 08:56:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,701 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-07-25 08:56:06,702 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:56:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-07-25 08:56:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:56:06,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,703 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 08:56:06,704 INFO L415 AbstractCegarLoop]: === Iteration 3 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,704 INFO L82 PathProgramCache]: Analyzing trace with hash 891297133, now seen corresponding path program 1 times [2018-07-25 08:56:06,704 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,740 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:56:06,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:56:06,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:56:06,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:56:06,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:56:06,742 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 4 states. [2018-07-25 08:56:06,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,761 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 08:56:06,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:56:06,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:56:06,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,764 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:56:06,765 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:56:06,765 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:56:06,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:56:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:56:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:56:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-07-25 08:56:06,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2018-07-25 08:56:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,771 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-07-25 08:56:06,771 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:56:06,771 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2018-07-25 08:56:06,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:56:06,772 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,772 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:56:06,772 INFO L415 AbstractCegarLoop]: === Iteration 4 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1860345825, now seen corresponding path program 1 times [2018-07-25 08:56:06,773 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2018-07-25 08:56:06,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:56:06,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:56:06,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:56:06,819 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2018-07-25 08:56:06,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,851 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2018-07-25 08:56:06,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:56:06,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-07-25 08:56:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,852 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:56:06,852 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:56:06,853 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:56:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:56:06,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-07-25 08:56:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:56:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-07-25 08:56:06,864 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2018-07-25 08:56:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,864 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-07-25 08:56:06,864 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:56:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-07-25 08:56:06,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:56:06,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,868 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:56:06,868 INFO L415 AbstractCegarLoop]: === Iteration 5 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1836084205, now seen corresponding path program 2 times [2018-07-25 08:56:06,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,909 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:56:06,909 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:56:06,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:56:06,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:56:06,912 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2018-07-25 08:56:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,935 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2018-07-25 08:56:06,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:56:06,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:56:06,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,936 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:56:06,936 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:56:06,937 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:56:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:56:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:56:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:56:06,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 08:56:06,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 8 [2018-07-25 08:56:06,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,942 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 08:56:06,942 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:56:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 08:56:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:56:06,942 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,943 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:56:06,943 INFO L415 AbstractCegarLoop]: === Iteration 6 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1860095751, now seen corresponding path program 3 times [2018-07-25 08:56:06,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:56:06,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:56:06,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:56:06,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:56:06,984 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2018-07-25 08:56:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,013 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-07-25 08:56:07,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:56:07,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:56:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,015 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:56:07,015 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:56:07,015 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:56:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:56:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 08:56:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:56:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-07-25 08:56:07,020 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2018-07-25 08:56:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,021 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-07-25 08:56:07,021 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:56:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2018-07-25 08:56:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:56:07,022 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,022 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,022 INFO L415 AbstractCegarLoop]: === Iteration 7 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1828331911, now seen corresponding path program 4 times [2018-07-25 08:56:07,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,066 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:56:07,066 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:56:07,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:56:07,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:56:07,070 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 5 states. [2018-07-25 08:56:07,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,128 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-07-25 08:56:07,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:56:07,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-07-25 08:56:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,133 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:56:07,133 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:56:07,134 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:56:07,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:56:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2018-07-25 08:56:07,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:56:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-07-25 08:56:07,147 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2018-07-25 08:56:07,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,152 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-07-25 08:56:07,152 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:56:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-07-25 08:56:07,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:56:07,153 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,153 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,153 INFO L415 AbstractCegarLoop]: === Iteration 8 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,157 INFO L82 PathProgramCache]: Analyzing trace with hash 843652871, now seen corresponding path program 5 times [2018-07-25 08:56:07,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:56:07,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:56:07,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:56:07,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:56:07,200 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 6 states. [2018-07-25 08:56:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,225 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2018-07-25 08:56:07,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:56:07,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:56:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,227 INFO L225 Difference]: With dead ends: 18 [2018-07-25 08:56:07,227 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:56:07,228 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:56:07,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:56:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:56:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:56:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 08:56:07,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 10 [2018-07-25 08:56:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,235 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 08:56:07,235 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:56:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 08:56:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:56:07,236 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,236 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,238 INFO L415 AbstractCegarLoop]: === Iteration 9 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1588010797, now seen corresponding path program 6 times [2018-07-25 08:56:07,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,284 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:56:07,285 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:56:07,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:56:07,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:56:07,288 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-25 08:56:07,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,321 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-07-25 08:56:07,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:56:07,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:56:07,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,322 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:56:07,322 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:56:07,323 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:56:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:56:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 08:56:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:56:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-07-25 08:56:07,328 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2018-07-25 08:56:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,329 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-07-25 08:56:07,329 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:56:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-07-25 08:56:07,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:56:07,330 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,330 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,330 INFO L415 AbstractCegarLoop]: === Iteration 10 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1983632929, now seen corresponding path program 7 times [2018-07-25 08:56:07,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:56:07,392 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:56:07,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:56:07,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:56:07,392 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 6 states. [2018-07-25 08:56:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,446 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-07-25 08:56:07,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:56:07,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-07-25 08:56:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,447 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:56:07,447 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:56:07,448 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:56:07,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:56:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2018-07-25 08:56:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:56:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-07-25 08:56:07,456 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2018-07-25 08:56:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,456 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-07-25 08:56:07,457 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:56:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-07-25 08:56:07,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:56:07,458 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,460 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,460 INFO L415 AbstractCegarLoop]: === Iteration 11 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1363017133, now seen corresponding path program 8 times [2018-07-25 08:56:07,461 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,499 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:56:07,499 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:56:07,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:56:07,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:56:07,503 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 7 states. [2018-07-25 08:56:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,531 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-07-25 08:56:07,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:56:07,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:56:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,533 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:56:07,533 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:56:07,534 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:56:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:56:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:56:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:56:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 08:56:07,540 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2018-07-25 08:56:07,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,540 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 08:56:07,540 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:56:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 08:56:07,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:56:07,542 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,542 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,542 INFO L415 AbstractCegarLoop]: === Iteration 12 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1331690937, now seen corresponding path program 9 times [2018-07-25 08:56:07,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:56:07,564 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:56:07,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:56:07,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:56:07,565 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-07-25 08:56:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,581 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-07-25 08:56:07,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:56:07,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:56:07,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,582 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:56:07,582 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:56:07,583 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:56:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:56:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 08:56:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:56:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-07-25 08:56:07,589 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2018-07-25 08:56:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,589 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-07-25 08:56:07,589 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:56:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-07-25 08:56:07,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:56:07,590 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,590 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,591 INFO L415 AbstractCegarLoop]: === Iteration 13 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1667192391, now seen corresponding path program 10 times [2018-07-25 08:56:07,591 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:56:07,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:56:07,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:56:07,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:56:07,629 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2018-07-25 08:56:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,671 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-07-25 08:56:07,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:56:07,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-07-25 08:56:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,673 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:56:07,673 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:56:07,673 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:56:07,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:56:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2018-07-25 08:56:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:56:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-07-25 08:56:07,682 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2018-07-25 08:56:07,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,683 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-07-25 08:56:07,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:56:07,683 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-07-25 08:56:07,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:56:07,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,684 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,685 INFO L415 AbstractCegarLoop]: === Iteration 14 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,685 INFO L82 PathProgramCache]: Analyzing trace with hash 143295047, now seen corresponding path program 11 times [2018-07-25 08:56:07,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:56:07,709 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:56:07,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:56:07,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:56:07,710 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2018-07-25 08:56:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,729 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-07-25 08:56:07,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:56:07,729 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:56:07,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,730 INFO L225 Difference]: With dead ends: 24 [2018-07-25 08:56:07,730 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:56:07,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:56:07,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:56:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:56:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:56:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 08:56:07,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 14 [2018-07-25 08:56:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,736 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 08:56:07,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:56:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 08:56:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:56:07,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,740 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,740 INFO L415 AbstractCegarLoop]: === Iteration 15 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1788276499, now seen corresponding path program 12 times [2018-07-25 08:56:07,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,791 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,791 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,792 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:56:07,792 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:56:07,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:56:07,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:56:07,793 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-07-25 08:56:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,817 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-07-25 08:56:07,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:56:07,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:56:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,819 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:56:07,819 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:56:07,820 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:56:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:56:07,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 08:56:07,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:56:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-07-25 08:56:07,825 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2018-07-25 08:56:07,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,825 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-07-25 08:56:07,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:56:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-07-25 08:56:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:56:07,826 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,827 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,827 INFO L415 AbstractCegarLoop]: === Iteration 16 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,827 INFO L82 PathProgramCache]: Analyzing trace with hash 397941857, now seen corresponding path program 13 times [2018-07-25 08:56:07,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,865 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:56:07,866 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:56:07,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:56:07,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:56:07,867 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 8 states. [2018-07-25 08:56:07,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,935 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-07-25 08:56:07,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:56:07,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-07-25 08:56:07,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,936 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:56:07,937 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:56:07,937 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:56:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:56:07,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2018-07-25 08:56:07,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:56:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-07-25 08:56:07,944 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2018-07-25 08:56:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,945 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-07-25 08:56:07,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:56:07,945 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-07-25 08:56:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:56:07,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,946 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1] [2018-07-25 08:56:07,946 INFO L415 AbstractCegarLoop]: === Iteration 17 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,946 INFO L82 PathProgramCache]: Analyzing trace with hash -548765843, now seen corresponding path program 14 times [2018-07-25 08:56:07,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:56:07,971 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:56:07,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:56:07,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:56:07,972 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 9 states. [2018-07-25 08:56:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,991 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-07-25 08:56:07,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:56:07,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:56:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,992 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:56:07,992 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:56:07,993 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:56:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:56:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:56:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:56:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-25 08:56:07,999 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 16 [2018-07-25 08:56:07,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,999 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-25 08:56:07,999 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:56:07,999 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-25 08:56:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:56:08,000 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,000 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,001 INFO L415 AbstractCegarLoop]: === Iteration 18 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,001 INFO L82 PathProgramCache]: Analyzing trace with hash -297941625, now seen corresponding path program 15 times [2018-07-25 08:56:08,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:56:08,039 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:56:08,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:56:08,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:56:08,040 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2018-07-25 08:56:08,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,072 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-07-25 08:56:08,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:56:08,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:56:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,075 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:56:08,075 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 08:56:08,077 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:56:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 08:56:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 08:56:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:56:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-07-25 08:56:08,085 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2018-07-25 08:56:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,086 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-07-25 08:56:08,086 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:56:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-07-25 08:56:08,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:56:08,087 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,088 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,088 INFO L415 AbstractCegarLoop]: === Iteration 19 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,089 INFO L82 PathProgramCache]: Analyzing trace with hash -646317305, now seen corresponding path program 16 times [2018-07-25 08:56:08,089 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,136 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:56:08,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:56:08,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:56:08,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:56:08,137 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 9 states. [2018-07-25 08:56:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,173 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-07-25 08:56:08,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:56:08,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-07-25 08:56:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,175 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:56:08,175 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:56:08,176 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:56:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:56:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2018-07-25 08:56:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:56:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-07-25 08:56:08,185 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-07-25 08:56:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,186 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-07-25 08:56:08,186 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:56:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-07-25 08:56:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:56:08,187 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,187 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,187 INFO L415 AbstractCegarLoop]: === Iteration 20 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1438938503, now seen corresponding path program 17 times [2018-07-25 08:56:08,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:56:08,217 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:56:08,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:56:08,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:56:08,217 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2018-07-25 08:56:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,239 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-07-25 08:56:08,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:56:08,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:56:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,240 INFO L225 Difference]: With dead ends: 30 [2018-07-25 08:56:08,240 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:56:08,241 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:56:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:56:08,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:56:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:56:08,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 08:56:08,247 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 18 [2018-07-25 08:56:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,248 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 08:56:08,248 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:56:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 08:56:08,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:56:08,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,249 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,249 INFO L415 AbstractCegarLoop]: === Iteration 21 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,249 INFO L82 PathProgramCache]: Analyzing trace with hash 624554669, now seen corresponding path program 18 times [2018-07-25 08:56:08,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,275 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:56:08,275 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:56:08,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:56:08,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:56:08,276 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2018-07-25 08:56:08,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,292 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-07-25 08:56:08,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:56:08,293 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:56:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,293 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:56:08,294 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:56:08,294 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:56:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:56:08,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 08:56:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:56:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-07-25 08:56:08,301 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2018-07-25 08:56:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,301 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-07-25 08:56:08,302 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:56:08,302 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-07-25 08:56:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 08:56:08,302 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,303 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,303 INFO L415 AbstractCegarLoop]: === Iteration 22 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,303 INFO L82 PathProgramCache]: Analyzing trace with hash -2113703263, now seen corresponding path program 19 times [2018-07-25 08:56:08,303 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,346 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:56:08,347 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:56:08,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:56:08,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:56:08,348 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2018-07-25 08:56:08,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,391 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-07-25 08:56:08,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:56:08,391 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-07-25 08:56:08,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,392 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:56:08,392 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:56:08,393 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:56:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:56:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2018-07-25 08:56:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:56:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-07-25 08:56:08,401 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2018-07-25 08:56:08,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,401 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-07-25 08:56:08,401 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:56:08,401 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-07-25 08:56:08,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:56:08,402 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,402 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,403 INFO L415 AbstractCegarLoop]: === Iteration 23 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1100353235, now seen corresponding path program 20 times [2018-07-25 08:56:08,403 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:56:08,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:56:08,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:56:08,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:56:08,433 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 11 states. [2018-07-25 08:56:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,458 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-07-25 08:56:08,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:56:08,458 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 08:56:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,459 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:56:08,459 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:56:08,460 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:56:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:56:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:56:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:56:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 08:56:08,467 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 20 [2018-07-25 08:56:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,468 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 08:56:08,468 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:56:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 08:56:08,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:56:08,468 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,469 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,469 INFO L415 AbstractCegarLoop]: === Iteration 24 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,470 INFO L82 PathProgramCache]: Analyzing trace with hash -576448313, now seen corresponding path program 21 times [2018-07-25 08:56:08,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,501 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,501 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:56:08,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:56:08,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:56:08,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:56:08,503 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2018-07-25 08:56:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,521 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-07-25 08:56:08,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:56:08,521 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 08:56:08,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,522 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:56:08,522 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:56:08,523 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:56:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:56:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 08:56:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:56:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-07-25 08:56:08,531 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2018-07-25 08:56:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,531 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-07-25 08:56:08,532 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:56:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-07-25 08:56:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:56:08,532 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,533 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,533 INFO L415 AbstractCegarLoop]: === Iteration 25 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash -690090041, now seen corresponding path program 22 times [2018-07-25 08:56:08,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,580 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,581 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:56:08,581 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:56:08,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:56:08,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:56:08,582 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 11 states. [2018-07-25 08:56:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,634 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-07-25 08:56:08,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:56:08,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2018-07-25 08:56:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,636 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:56:08,636 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:56:08,637 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:56:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:56:08,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2018-07-25 08:56:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:56:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-07-25 08:56:08,647 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2018-07-25 08:56:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,648 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-07-25 08:56:08,648 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:56:08,648 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-07-25 08:56:08,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:56:08,649 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,649 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,650 INFO L415 AbstractCegarLoop]: === Iteration 26 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,650 INFO L82 PathProgramCache]: Analyzing trace with hash 81983687, now seen corresponding path program 23 times [2018-07-25 08:56:08,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:56:08,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:56:08,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:56:08,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:56:08,684 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 12 states. [2018-07-25 08:56:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,711 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-07-25 08:56:08,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:56:08,712 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:56:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,712 INFO L225 Difference]: With dead ends: 36 [2018-07-25 08:56:08,713 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:56:08,713 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:56:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:56:08,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:56:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:56:08,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-25 08:56:08,722 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 22 [2018-07-25 08:56:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,723 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-25 08:56:08,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:56:08,723 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-25 08:56:08,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:56:08,724 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,724 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,724 INFO L415 AbstractCegarLoop]: === Iteration 27 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,726 INFO L82 PathProgramCache]: Analyzing trace with hash -856832915, now seen corresponding path program 24 times [2018-07-25 08:56:08,726 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:56:08,765 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:56:08,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:56:08,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:56:08,766 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-07-25 08:56:08,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,790 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-07-25 08:56:08,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:56:08,790 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:56:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,791 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:56:08,791 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 08:56:08,792 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:56:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 08:56:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 08:56:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:56:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-07-25 08:56:08,804 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2018-07-25 08:56:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,804 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-07-25 08:56:08,805 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:56:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-07-25 08:56:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:56:08,805 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,806 INFO L354 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,806 INFO L415 AbstractCegarLoop]: === Iteration 28 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,810 INFO L82 PathProgramCache]: Analyzing trace with hash -792078111, now seen corresponding path program 25 times [2018-07-25 08:56:08,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,879 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,879 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:56:08,880 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:56:08,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:56:08,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:56:08,881 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 12 states. [2018-07-25 08:56:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,949 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-07-25 08:56:08,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:56:08,949 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2018-07-25 08:56:08,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,950 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:56:08,951 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:56:08,952 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:56:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:56:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2018-07-25 08:56:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:56:08,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-07-25 08:56:08,964 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 23 [2018-07-25 08:56:08,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,965 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-07-25 08:56:08,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:56:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-07-25 08:56:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:56:08,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,966 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1] [2018-07-25 08:56:08,966 INFO L415 AbstractCegarLoop]: === Iteration 29 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1215320813, now seen corresponding path program 26 times [2018-07-25 08:56:08,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,012 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:56:09,013 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:56:09,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:56:09,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:56:09,014 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 13 states. [2018-07-25 08:56:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,048 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-07-25 08:56:09,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:56:09,049 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-25 08:56:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,050 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:56:09,050 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:56:09,051 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:56:09,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:56:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:56:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:56:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 08:56:09,065 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 24 [2018-07-25 08:56:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,066 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 08:56:09,066 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:56:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 08:56:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:56:09,066 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,067 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1] [2018-07-25 08:56:09,067 INFO L415 AbstractCegarLoop]: === Iteration 30 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2118190073, now seen corresponding path program 27 times [2018-07-25 08:56:09,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:56:09,127 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:56:09,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:56:09,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:56:09,128 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 13 states. [2018-07-25 08:56:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,156 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-07-25 08:56:09,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:56:09,156 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-25 08:56:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,157 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:56:09,157 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:56:09,158 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:56:09,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:56:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 08:56:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:56:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-07-25 08:56:09,173 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 24 [2018-07-25 08:56:09,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,174 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-07-25 08:56:09,174 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:56:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-07-25 08:56:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:56:09,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,176 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2018-07-25 08:56:09,176 INFO L415 AbstractCegarLoop]: === Iteration 31 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1239444345, now seen corresponding path program 28 times [2018-07-25 08:56:09,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,246 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,247 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:56:09,247 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:56:09,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:56:09,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:56:09,248 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 13 states. [2018-07-25 08:56:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,323 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-07-25 08:56:09,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:56:09,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-07-25 08:56:09,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,324 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:56:09,324 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:56:09,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:56:09,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:56:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2018-07-25 08:56:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:56:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-07-25 08:56:09,347 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 25 [2018-07-25 08:56:09,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,347 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-07-25 08:56:09,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:56:09,347 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-07-25 08:56:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:56:09,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,348 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1] [2018-07-25 08:56:09,349 INFO L415 AbstractCegarLoop]: === Iteration 32 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,349 INFO L82 PathProgramCache]: Analyzing trace with hash 231869447, now seen corresponding path program 29 times [2018-07-25 08:56:09,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,391 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,392 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:56:09,392 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:56:09,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:56:09,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:56:09,393 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 14 states. [2018-07-25 08:56:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,429 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-07-25 08:56:09,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:56:09,429 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:56:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,430 INFO L225 Difference]: With dead ends: 42 [2018-07-25 08:56:09,430 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:56:09,431 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:56:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:56:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:56:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:56:09,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 08:56:09,444 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 26 [2018-07-25 08:56:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,444 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 08:56:09,444 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:56:09,444 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 08:56:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:56:09,445 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,445 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1] [2018-07-25 08:56:09,448 INFO L415 AbstractCegarLoop]: === Iteration 33 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,448 INFO L82 PathProgramCache]: Analyzing trace with hash -27752915, now seen corresponding path program 30 times [2018-07-25 08:56:09,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,510 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:56:09,511 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:56:09,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:56:09,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:56:09,512 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2018-07-25 08:56:09,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,541 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-07-25 08:56:09,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:56:09,541 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:56:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,542 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:56:09,542 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:56:09,543 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:56:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:56:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 08:56:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:56:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-07-25 08:56:09,555 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2018-07-25 08:56:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,555 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-07-25 08:56:09,555 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:56:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-07-25 08:56:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:56:09,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,557 INFO L354 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1] [2018-07-25 08:56:09,557 INFO L415 AbstractCegarLoop]: === Iteration 34 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,557 INFO L82 PathProgramCache]: Analyzing trace with hash -860401887, now seen corresponding path program 31 times [2018-07-25 08:56:09,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,638 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:56:09,639 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:56:09,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:56:09,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:56:09,640 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 14 states. [2018-07-25 08:56:09,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,730 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-07-25 08:56:09,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:56:09,731 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2018-07-25 08:56:09,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,731 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:56:09,732 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:56:09,732 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:56:09,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:56:09,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2018-07-25 08:56:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:56:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-07-25 08:56:09,749 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 27 [2018-07-25 08:56:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,749 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-07-25 08:56:09,749 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:56:09,750 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-07-25 08:56:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:56:09,750 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,750 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1] [2018-07-25 08:56:09,751 INFO L415 AbstractCegarLoop]: === Iteration 35 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,751 INFO L82 PathProgramCache]: Analyzing trace with hash -902716243, now seen corresponding path program 32 times [2018-07-25 08:56:09,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:56:09,796 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:56:09,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:56:09,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:56:09,797 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 15 states. [2018-07-25 08:56:09,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,832 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-07-25 08:56:09,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:56:09,833 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-25 08:56:09,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,833 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:56:09,834 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:56:09,834 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:56:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:56:09,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:56:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:56:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-25 08:56:09,851 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 28 [2018-07-25 08:56:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,852 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-25 08:56:09,852 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:56:09,852 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-25 08:56:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:56:09,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,853 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1] [2018-07-25 08:56:09,853 INFO L415 AbstractCegarLoop]: === Iteration 36 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,853 INFO L82 PathProgramCache]: Analyzing trace with hash -361074873, now seen corresponding path program 33 times [2018-07-25 08:56:09,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,905 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:56:09,905 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:56:09,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:56:09,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:56:09,906 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 15 states. [2018-07-25 08:56:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,934 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-07-25 08:56:09,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:56:09,934 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-25 08:56:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,935 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:56:09,935 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 08:56:09,935 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:56:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 08:56:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 08:56:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:56:09,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-07-25 08:56:09,947 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 28 [2018-07-25 08:56:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,948 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-07-25 08:56:09,948 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:56:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-07-25 08:56:09,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:56:09,948 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,949 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1] [2018-07-25 08:56:09,949 INFO L415 AbstractCegarLoop]: === Iteration 37 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1691519303, now seen corresponding path program 34 times [2018-07-25 08:56:09,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,027 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,027 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:56:10,027 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:56:10,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:56:10,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:56:10,028 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 15 states. [2018-07-25 08:56:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,122 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2018-07-25 08:56:10,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:56:10,122 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2018-07-25 08:56:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,123 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:56:10,123 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:56:10,124 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:56:10,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:56:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2018-07-25 08:56:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:56:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-07-25 08:56:10,137 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 29 [2018-07-25 08:56:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,138 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-07-25 08:56:10,138 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:56:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-07-25 08:56:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:56:10,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,140 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1] [2018-07-25 08:56:10,141 INFO L415 AbstractCegarLoop]: === Iteration 38 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,141 INFO L82 PathProgramCache]: Analyzing trace with hash 897429319, now seen corresponding path program 35 times [2018-07-25 08:56:10,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,190 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:56:10,190 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:56:10,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:56:10,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:56:10,191 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 16 states. [2018-07-25 08:56:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,231 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2018-07-25 08:56:10,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:56:10,231 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:56:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,232 INFO L225 Difference]: With dead ends: 48 [2018-07-25 08:56:10,232 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:56:10,233 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:56:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:56:10,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:56:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:56:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 08:56:10,248 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 30 [2018-07-25 08:56:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,248 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 08:56:10,248 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:56:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 08:56:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:56:10,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,249 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1] [2018-07-25 08:56:10,249 INFO L415 AbstractCegarLoop]: === Iteration 39 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,249 INFO L82 PathProgramCache]: Analyzing trace with hash 508442605, now seen corresponding path program 36 times [2018-07-25 08:56:10,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:56:10,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:56:10,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:56:10,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:56:10,300 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 16 states. [2018-07-25 08:56:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,326 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-07-25 08:56:10,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:56:10,326 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:56:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,327 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:56:10,327 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:56:10,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:56:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:56:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 08:56:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:56:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-07-25 08:56:10,339 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2018-07-25 08:56:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,339 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-07-25 08:56:10,339 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:56:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-07-25 08:56:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 08:56:10,340 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,340 INFO L354 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1] [2018-07-25 08:56:10,340 INFO L415 AbstractCegarLoop]: === Iteration 40 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1418209951, now seen corresponding path program 37 times [2018-07-25 08:56:10,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:56:10,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:56:10,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:56:10,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:56:10,465 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 16 states. [2018-07-25 08:56:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,577 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-07-25 08:56:10,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:56:10,577 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2018-07-25 08:56:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,578 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:56:10,578 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:56:10,578 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:56:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:56:10,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2018-07-25 08:56:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:56:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-07-25 08:56:10,595 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 31 [2018-07-25 08:56:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,595 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-07-25 08:56:10,595 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:56:10,596 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-07-25 08:56:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:56:10,596 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,596 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1] [2018-07-25 08:56:10,596 INFO L415 AbstractCegarLoop]: === Iteration 41 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1014897043, now seen corresponding path program 38 times [2018-07-25 08:56:10,597 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,653 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,653 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:56:10,654 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:56:10,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:56:10,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:56:10,654 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 17 states. [2018-07-25 08:56:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,701 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-07-25 08:56:10,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:56:10,701 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-25 08:56:10,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,702 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:56:10,702 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:56:10,703 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:56:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:56:10,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:56:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:56:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 08:56:10,716 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2018-07-25 08:56:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,716 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 08:56:10,716 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:56:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 08:56:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:56:10,717 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,717 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1] [2018-07-25 08:56:10,717 INFO L415 AbstractCegarLoop]: === Iteration 42 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,718 INFO L82 PathProgramCache]: Analyzing trace with hash -188583289, now seen corresponding path program 39 times [2018-07-25 08:56:10,718 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,777 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:56:10,778 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:56:10,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:56:10,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:56:10,779 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 17 states. [2018-07-25 08:56:10,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,806 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-07-25 08:56:10,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:56:10,806 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-25 08:56:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,807 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:56:10,807 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:56:10,807 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:56:10,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:56:10,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 08:56:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:56:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-07-25 08:56:10,820 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 32 [2018-07-25 08:56:10,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,821 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-07-25 08:56:10,821 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:56:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-07-25 08:56:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 08:56:10,821 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,821 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1] [2018-07-25 08:56:10,822 INFO L415 AbstractCegarLoop]: === Iteration 43 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1551176185, now seen corresponding path program 40 times [2018-07-25 08:56:10,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:56:10,899 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:56:10,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:56:10,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:56:10,900 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 17 states. [2018-07-25 08:56:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,012 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-07-25 08:56:11,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:56:11,012 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 33 [2018-07-25 08:56:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,013 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:56:11,013 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:56:11,014 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:56:11,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:56:11,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2018-07-25 08:56:11,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:56:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-07-25 08:56:11,032 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 33 [2018-07-25 08:56:11,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,032 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-07-25 08:56:11,032 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:56:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-07-25 08:56:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:56:11,033 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,033 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1] [2018-07-25 08:56:11,034 INFO L415 AbstractCegarLoop]: === Iteration 44 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,034 INFO L82 PathProgramCache]: Analyzing trace with hash -841883001, now seen corresponding path program 41 times [2018-07-25 08:56:11,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,087 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,087 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:56:11,087 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:56:11,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:56:11,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:56:11,088 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 18 states. [2018-07-25 08:56:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,149 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2018-07-25 08:56:11,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:56:11,149 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:56:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,150 INFO L225 Difference]: With dead ends: 54 [2018-07-25 08:56:11,150 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:56:11,150 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:56:11,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:56:11,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:56:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:56:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-25 08:56:11,166 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 34 [2018-07-25 08:56:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,166 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-25 08:56:11,166 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:56:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-25 08:56:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:56:11,167 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,167 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1] [2018-07-25 08:56:11,167 INFO L415 AbstractCegarLoop]: === Iteration 45 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,167 INFO L82 PathProgramCache]: Analyzing trace with hash -995960403, now seen corresponding path program 42 times [2018-07-25 08:56:11,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:56:11,228 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:56:11,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:56:11,229 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:56:11,229 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 18 states. [2018-07-25 08:56:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,262 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-07-25 08:56:11,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:56:11,262 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:56:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,263 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:56:11,263 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 08:56:11,263 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:56:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 08:56:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 08:56:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:56:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-07-25 08:56:11,278 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 34 [2018-07-25 08:56:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,278 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-07-25 08:56:11,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:56:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-07-25 08:56:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:56:11,279 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,279 INFO L354 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1] [2018-07-25 08:56:11,280 INFO L415 AbstractCegarLoop]: === Iteration 46 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,280 INFO L82 PathProgramCache]: Analyzing trace with hash -810062943, now seen corresponding path program 43 times [2018-07-25 08:56:11,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,367 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:56:11,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:56:11,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:56:11,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:56:11,368 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 18 states. [2018-07-25 08:56:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,496 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-07-25 08:56:11,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:56:11,496 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 35 [2018-07-25 08:56:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,497 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:56:11,497 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:56:11,498 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:56:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:56:11,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2018-07-25 08:56:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:56:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-07-25 08:56:11,513 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 35 [2018-07-25 08:56:11,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,513 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-07-25 08:56:11,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:56:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-07-25 08:56:11,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:56:11,514 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,515 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1] [2018-07-25 08:56:11,515 INFO L415 AbstractCegarLoop]: === Iteration 47 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,515 INFO L82 PathProgramCache]: Analyzing trace with hash 657791021, now seen corresponding path program 44 times [2018-07-25 08:56:11,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,567 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:56:11,568 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:56:11,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:56:11,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:56:11,569 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 19 states. [2018-07-25 08:56:11,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,624 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-07-25 08:56:11,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:56:11,624 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-25 08:56:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,625 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:56:11,625 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:56:11,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:56:11,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:56:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:56:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:56:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 08:56:11,641 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 36 [2018-07-25 08:56:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,641 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 08:56:11,641 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:56:11,641 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 08:56:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:56:11,642 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,642 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1] [2018-07-25 08:56:11,642 INFO L415 AbstractCegarLoop]: === Iteration 48 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,642 INFO L82 PathProgramCache]: Analyzing trace with hash 176358855, now seen corresponding path program 45 times [2018-07-25 08:56:11,643 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,699 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:56:11,700 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:56:11,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:56:11,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:56:11,701 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 19 states. [2018-07-25 08:56:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,732 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-07-25 08:56:11,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:56:11,732 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-25 08:56:11,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,733 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:56:11,733 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:56:11,733 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:56:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:56:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 08:56:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:56:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2018-07-25 08:56:11,748 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 36 [2018-07-25 08:56:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,749 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2018-07-25 08:56:11,749 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:56:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2018-07-25 08:56:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 08:56:11,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,749 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1] [2018-07-25 08:56:11,750 INFO L415 AbstractCegarLoop]: === Iteration 49 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1172095687, now seen corresponding path program 46 times [2018-07-25 08:56:11,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:56:11,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:56:11,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:56:11,837 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:56:11,838 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 19 states. [2018-07-25 08:56:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,973 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-07-25 08:56:11,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:56:11,973 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 37 [2018-07-25 08:56:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,974 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:56:11,974 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:56:11,974 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:56:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:56:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40. [2018-07-25 08:56:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:56:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-07-25 08:56:11,994 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 37 [2018-07-25 08:56:11,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,994 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-07-25 08:56:11,994 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:56:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-07-25 08:56:11,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:56:11,995 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,995 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1] [2018-07-25 08:56:11,995 INFO L415 AbstractCegarLoop]: === Iteration 50 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1975166407, now seen corresponding path program 47 times [2018-07-25 08:56:11,996 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:56:12,056 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:56:12,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:56:12,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:56:12,058 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 20 states. [2018-07-25 08:56:12,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,120 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-07-25 08:56:12,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:56:12,120 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:56:12,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,121 INFO L225 Difference]: With dead ends: 60 [2018-07-25 08:56:12,121 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:56:12,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:56:12,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:56:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:56:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:56:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 08:56:12,137 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 38 [2018-07-25 08:56:12,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,137 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 08:56:12,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:56:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 08:56:12,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:56:12,137 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,138 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1] [2018-07-25 08:56:12,138 INFO L415 AbstractCegarLoop]: === Iteration 51 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,138 INFO L82 PathProgramCache]: Analyzing trace with hash -64328851, now seen corresponding path program 48 times [2018-07-25 08:56:12,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,210 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:56:12,210 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:56:12,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:56:12,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:56:12,212 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 20 states. [2018-07-25 08:56:12,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,245 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2018-07-25 08:56:12,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:56:12,246 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:56:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,246 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:56:12,246 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:56:12,247 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:56:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:56:12,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 08:56:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:56:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2018-07-25 08:56:12,264 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2018-07-25 08:56:12,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,264 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2018-07-25 08:56:12,264 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:56:12,264 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2018-07-25 08:56:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:56:12,265 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,265 INFO L354 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1] [2018-07-25 08:56:12,265 INFO L415 AbstractCegarLoop]: === Iteration 52 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1994255903, now seen corresponding path program 49 times [2018-07-25 08:56:12,266 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,355 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:56:12,356 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:56:12,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:56:12,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:56:12,357 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 20 states. [2018-07-25 08:56:12,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,511 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-07-25 08:56:12,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:56:12,512 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 39 [2018-07-25 08:56:12,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,512 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:56:12,513 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:56:12,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:56:12,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:56:12,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2018-07-25 08:56:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:56:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-07-25 08:56:12,532 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 39 [2018-07-25 08:56:12,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,532 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-07-25 08:56:12,532 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:56:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-07-25 08:56:12,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:56:12,533 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,533 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1] [2018-07-25 08:56:12,534 INFO L415 AbstractCegarLoop]: === Iteration 53 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1692452371, now seen corresponding path program 50 times [2018-07-25 08:56:12,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,592 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,592 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:56:12,593 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:56:12,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:56:12,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:56:12,593 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 21 states. [2018-07-25 08:56:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,650 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-07-25 08:56:12,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:56:12,650 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-25 08:56:12,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,651 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:56:12,651 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:56:12,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:56:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:56:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:56:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:56:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-25 08:56:12,668 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 40 [2018-07-25 08:56:12,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,668 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-25 08:56:12,668 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:56:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-25 08:56:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:56:12,669 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,669 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1] [2018-07-25 08:56:12,669 INFO L415 AbstractCegarLoop]: === Iteration 54 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,670 INFO L82 PathProgramCache]: Analyzing trace with hash -492295929, now seen corresponding path program 51 times [2018-07-25 08:56:12,670 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:56:12,733 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:56:12,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:56:12,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:56:12,733 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 21 states. [2018-07-25 08:56:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,766 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-07-25 08:56:12,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:56:12,766 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-25 08:56:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,767 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:56:12,767 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 08:56:12,768 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:56:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 08:56:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 08:56:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:56:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-07-25 08:56:12,785 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 40 [2018-07-25 08:56:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,785 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-07-25 08:56:12,785 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:56:12,785 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-07-25 08:56:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:56:12,786 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,786 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1] [2018-07-25 08:56:12,786 INFO L415 AbstractCegarLoop]: === Iteration 55 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1918633863, now seen corresponding path program 52 times [2018-07-25 08:56:12,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,884 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,884 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:56:12,885 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:56:12,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:56:12,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:56:12,885 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 21 states. [2018-07-25 08:56:13,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:13,053 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2018-07-25 08:56:13,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:56:13,054 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2018-07-25 08:56:13,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:13,055 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:56:13,055 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:56:13,056 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:56:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:56:13,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2018-07-25 08:56:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:56:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2018-07-25 08:56:13,078 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 41 [2018-07-25 08:56:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:13,078 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2018-07-25 08:56:13,078 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:56:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2018-07-25 08:56:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:56:13,079 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:13,079 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1] [2018-07-25 08:56:13,080 INFO L415 AbstractCegarLoop]: === Iteration 56 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:13,080 INFO L82 PathProgramCache]: Analyzing trace with hash -651953913, now seen corresponding path program 53 times [2018-07-25 08:56:13,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 190 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:13,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:13,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:56:13,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:56:13,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:56:13,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:56:13,155 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 22 states. [2018-07-25 08:56:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:13,225 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2018-07-25 08:56:13,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:56:13,225 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:56:13,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:13,226 INFO L225 Difference]: With dead ends: 66 [2018-07-25 08:56:13,226 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:56:13,227 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:56:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:56:13,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:56:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:56:13,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 08:56:13,247 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 42 [2018-07-25 08:56:13,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:13,248 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 08:56:13,248 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:56:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 08:56:13,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:56:13,248 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:13,249 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1] [2018-07-25 08:56:13,249 INFO L415 AbstractCegarLoop]: === Iteration 57 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:13,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2101809875, now seen corresponding path program 54 times [2018-07-25 08:56:13,249 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 190 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:13,327 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:13,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:56:13,328 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:56:13,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:56:13,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:56:13,328 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 22 states. [2018-07-25 08:56:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:13,366 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2018-07-25 08:56:13,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:56:13,367 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:56:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:13,367 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:56:13,367 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:56:13,368 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:56:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:56:13,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 08:56:13,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:56:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2018-07-25 08:56:13,389 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2018-07-25 08:56:13,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:13,389 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2018-07-25 08:56:13,389 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:56:13,390 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2018-07-25 08:56:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 08:56:13,390 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:13,390 INFO L354 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1] [2018-07-25 08:56:13,391 INFO L415 AbstractCegarLoop]: === Iteration 58 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash -731658207, now seen corresponding path program 55 times [2018-07-25 08:56:13,391 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:13,517 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:13,517 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:56:13,517 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:56:13,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:56:13,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:56:13,537 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 22 states. [2018-07-25 08:56:13,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:13,727 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-07-25 08:56:13,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:56:13,727 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 43 [2018-07-25 08:56:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:13,728 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:56:13,728 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:56:13,728 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:56:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:56:13,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2018-07-25 08:56:13,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:56:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-07-25 08:56:13,752 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 43 [2018-07-25 08:56:13,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:13,752 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-07-25 08:56:13,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:56:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-07-25 08:56:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:56:13,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:13,753 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1] [2018-07-25 08:56:13,753 INFO L415 AbstractCegarLoop]: === Iteration 59 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:13,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1206629459, now seen corresponding path program 56 times [2018-07-25 08:56:13,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:13,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:13,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:56:13,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:56:13,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:56:13,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:56:13,820 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 23 states. [2018-07-25 08:56:13,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:13,894 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2018-07-25 08:56:13,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:56:13,894 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-25 08:56:13,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:13,895 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:56:13,895 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:56:13,896 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:56:13,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:56:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:56:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:56:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 08:56:13,917 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 44 [2018-07-25 08:56:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:13,917 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 08:56:13,918 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:56:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 08:56:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:56:13,918 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:13,918 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1] [2018-07-25 08:56:13,919 INFO L415 AbstractCegarLoop]: === Iteration 60 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:13,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1092475975, now seen corresponding path program 57 times [2018-07-25 08:56:13,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:13,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:13,990 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:56:13,991 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:56:13,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:56:13,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:56:13,992 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 23 states. [2018-07-25 08:56:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:14,030 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-07-25 08:56:14,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:56:14,030 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-25 08:56:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:14,031 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:56:14,031 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:56:14,031 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:56:14,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:56:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 08:56:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:56:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-07-25 08:56:14,054 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 44 [2018-07-25 08:56:14,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:14,054 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-07-25 08:56:14,054 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:56:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-07-25 08:56:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:56:14,055 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:14,055 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1] [2018-07-25 08:56:14,055 INFO L415 AbstractCegarLoop]: === Iteration 61 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:14,055 INFO L82 PathProgramCache]: Analyzing trace with hash -493044665, now seen corresponding path program 58 times [2018-07-25 08:56:14,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:14,167 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:14,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:56:14,167 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:56:14,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:56:14,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:56:14,168 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 23 states. [2018-07-25 08:56:14,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:14,359 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2018-07-25 08:56:14,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:56:14,359 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2018-07-25 08:56:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:14,360 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:56:14,360 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:56:14,360 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:56:14,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:56:14,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2018-07-25 08:56:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:56:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-07-25 08:56:14,386 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 45 [2018-07-25 08:56:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:14,387 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-07-25 08:56:14,387 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:56:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-07-25 08:56:14,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:56:14,387 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:14,388 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1] [2018-07-25 08:56:14,388 INFO L415 AbstractCegarLoop]: === Iteration 62 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:14,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1895423047, now seen corresponding path program 59 times [2018-07-25 08:56:14,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 231 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:14,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:14,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:56:14,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:56:14,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:56:14,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:56:14,467 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 24 states. [2018-07-25 08:56:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:14,545 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2018-07-25 08:56:14,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:56:14,545 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:56:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:14,546 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:56:14,546 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:56:14,547 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:56:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:56:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:56:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:56:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-25 08:56:14,570 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 46 [2018-07-25 08:56:14,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:14,570 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-25 08:56:14,571 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:56:14,571 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-25 08:56:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:56:14,571 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:14,571 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1] [2018-07-25 08:56:14,572 INFO L415 AbstractCegarLoop]: === Iteration 63 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:14,572 INFO L82 PathProgramCache]: Analyzing trace with hash 153247469, now seen corresponding path program 60 times [2018-07-25 08:56:14,572 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:14,668 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 231 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:14,669 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:14,669 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:56:14,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:56:14,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:56:14,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:56:14,670 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-07-25 08:56:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:14,713 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-07-25 08:56:14,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:56:14,713 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:56:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:14,714 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:56:14,714 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 08:56:14,715 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:56:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 08:56:14,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 08:56:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:56:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2018-07-25 08:56:14,740 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2018-07-25 08:56:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:14,740 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2018-07-25 08:56:14,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:56:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2018-07-25 08:56:14,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:56:14,741 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:14,741 INFO L354 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1] [2018-07-25 08:56:14,741 INFO L415 AbstractCegarLoop]: === Iteration 64 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:14,742 INFO L82 PathProgramCache]: Analyzing trace with hash 455642721, now seen corresponding path program 61 times [2018-07-25 08:56:14,742 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:14,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:14,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:56:14,864 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:56:14,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:56:14,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:56:14,865 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 24 states. [2018-07-25 08:56:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:15,080 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2018-07-25 08:56:15,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:56:15,080 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 47 [2018-07-25 08:56:15,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:15,081 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:56:15,081 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:56:15,082 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:56:15,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:56:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 50. [2018-07-25 08:56:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:56:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-07-25 08:56:15,113 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 47 [2018-07-25 08:56:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:15,114 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-07-25 08:56:15,114 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:56:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-07-25 08:56:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:56:15,114 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:15,115 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1] [2018-07-25 08:56:15,115 INFO L415 AbstractCegarLoop]: === Iteration 65 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:15,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1239960941, now seen corresponding path program 62 times [2018-07-25 08:56:15,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:15,187 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:15,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:56:15,188 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:56:15,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:56:15,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:56:15,188 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 25 states. [2018-07-25 08:56:15,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:15,270 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-07-25 08:56:15,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:56:15,270 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-25 08:56:15,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:15,271 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:56:15,271 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:56:15,271 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:56:15,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:56:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:56:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:56:15,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 08:56:15,295 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 48 [2018-07-25 08:56:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:15,295 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 08:56:15,295 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:56:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 08:56:15,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:56:15,295 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:15,296 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1] [2018-07-25 08:56:15,296 INFO L415 AbstractCegarLoop]: === Iteration 66 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:15,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1227874425, now seen corresponding path program 63 times [2018-07-25 08:56:15,296 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:15,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:15,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:56:15,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:56:15,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:56:15,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:56:15,380 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 25 states. [2018-07-25 08:56:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:15,426 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-07-25 08:56:15,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:56:15,427 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-25 08:56:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:15,428 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:56:15,428 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:56:15,428 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:56:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:56:15,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 08:56:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:56:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2018-07-25 08:56:15,459 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 48 [2018-07-25 08:56:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:15,459 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2018-07-25 08:56:15,459 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:56:15,459 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2018-07-25 08:56:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 08:56:15,460 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:15,460 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1] [2018-07-25 08:56:15,460 INFO L415 AbstractCegarLoop]: === Iteration 67 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:15,461 INFO L82 PathProgramCache]: Analyzing trace with hash 590536967, now seen corresponding path program 64 times [2018-07-25 08:56:15,461 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:15,582 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:15,582 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:56:15,582 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:56:15,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:56:15,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:56:15,583 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 25 states. [2018-07-25 08:56:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:15,811 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2018-07-25 08:56:15,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:56:15,812 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 49 [2018-07-25 08:56:15,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:15,813 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:56:15,813 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:56:15,813 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:56:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:56:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 52. [2018-07-25 08:56:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:56:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2018-07-25 08:56:15,842 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 49 [2018-07-25 08:56:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:15,842 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2018-07-25 08:56:15,842 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:56:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2018-07-25 08:56:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:56:15,843 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:15,843 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1] [2018-07-25 08:56:15,843 INFO L415 AbstractCegarLoop]: === Iteration 68 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:15,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1126715271, now seen corresponding path program 65 times [2018-07-25 08:56:15,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 276 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:15,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:15,924 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:56:15,924 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:56:15,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:56:15,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:56:15,925 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 26 states. [2018-07-25 08:56:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:16,013 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2018-07-25 08:56:16,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:56:16,014 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:56:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:16,014 INFO L225 Difference]: With dead ends: 78 [2018-07-25 08:56:16,014 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:56:16,015 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:56:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:56:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:56:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:56:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 08:56:16,039 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 50 [2018-07-25 08:56:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:16,039 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 08:56:16,039 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:56:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 08:56:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:56:16,040 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:16,040 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1] [2018-07-25 08:56:16,041 INFO L415 AbstractCegarLoop]: === Iteration 69 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:16,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1933230253, now seen corresponding path program 66 times [2018-07-25 08:56:16,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 276 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:16,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:56:16,127 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:56:16,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:56:16,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:56:16,128 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 26 states. [2018-07-25 08:56:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:16,173 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2018-07-25 08:56:16,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:56:16,173 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:56:16,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:16,174 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:56:16,174 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:56:16,174 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:56:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:56:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 08:56:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:56:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2018-07-25 08:56:16,201 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2018-07-25 08:56:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:16,201 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2018-07-25 08:56:16,201 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:56:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2018-07-25 08:56:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:56:16,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:16,202 INFO L354 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1] [2018-07-25 08:56:16,202 INFO L415 AbstractCegarLoop]: === Iteration 70 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash -199465823, now seen corresponding path program 67 times [2018-07-25 08:56:16,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:16,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:56:16,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:56:16,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:56:16,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:56:16,343 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 26 states. [2018-07-25 08:56:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:16,596 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-07-25 08:56:16,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:56:16,596 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 51 [2018-07-25 08:56:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:16,597 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:56:16,597 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:56:16,598 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:56:16,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:56:16,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2018-07-25 08:56:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:56:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2018-07-25 08:56:16,629 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 51 [2018-07-25 08:56:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:16,629 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2018-07-25 08:56:16,629 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:56:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2018-07-25 08:56:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:56:16,630 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:16,630 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1] [2018-07-25 08:56:16,630 INFO L415 AbstractCegarLoop]: === Iteration 71 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:16,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1888534739, now seen corresponding path program 68 times [2018-07-25 08:56:16,631 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 300 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:16,721 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:56:16,722 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:56:16,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:56:16,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:56:16,722 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 27 states. [2018-07-25 08:56:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:16,826 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2018-07-25 08:56:16,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:56:16,826 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-25 08:56:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:16,827 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:56:16,827 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:56:16,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:56:16,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:56:16,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:56:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:56:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-25 08:56:16,858 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 52 [2018-07-25 08:56:16,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:16,859 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-25 08:56:16,859 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:56:16,859 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-25 08:56:16,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:56:16,860 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:16,860 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1] [2018-07-25 08:56:16,860 INFO L415 AbstractCegarLoop]: === Iteration 72 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:16,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1638593223, now seen corresponding path program 69 times [2018-07-25 08:56:16,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 300 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:16,992 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,992 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:56:16,992 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:56:16,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:56:16,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:56:16,993 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 27 states. [2018-07-25 08:56:17,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,038 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-07-25 08:56:17,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:56:17,039 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-25 08:56:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,040 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:56:17,040 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 08:56:17,040 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:56:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 08:56:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 08:56:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:56:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2018-07-25 08:56:17,066 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 52 [2018-07-25 08:56:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,067 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2018-07-25 08:56:17,067 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:56:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2018-07-25 08:56:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:56:17,067 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,068 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1] [2018-07-25 08:56:17,068 INFO L415 AbstractCegarLoop]: === Iteration 73 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,068 INFO L82 PathProgramCache]: Analyzing trace with hash -743279161, now seen corresponding path program 70 times [2018-07-25 08:56:17,068 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:17,185 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:17,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:56:17,186 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:56:17,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:56:17,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:56:17,187 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 27 states. [2018-07-25 08:56:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,413 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2018-07-25 08:56:17,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:56:17,413 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 53 [2018-07-25 08:56:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,414 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:56:17,414 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:56:17,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:56:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:56:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 56. [2018-07-25 08:56:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:56:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-07-25 08:56:17,445 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 53 [2018-07-25 08:56:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,446 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-07-25 08:56:17,446 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:56:17,446 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-07-25 08:56:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:56:17,446 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,447 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1] [2018-07-25 08:56:17,447 INFO L415 AbstractCegarLoop]: === Iteration 74 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1566879033, now seen corresponding path program 71 times [2018-07-25 08:56:17,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 325 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:17,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:17,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:56:17,524 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:56:17,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:56:17,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:56:17,524 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 28 states. [2018-07-25 08:56:17,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,622 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2018-07-25 08:56:17,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:56:17,622 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:56:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,623 INFO L225 Difference]: With dead ends: 84 [2018-07-25 08:56:17,623 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:56:17,624 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:56:17,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:56:17,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:56:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:56:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 08:56:17,650 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 54 [2018-07-25 08:56:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,650 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 08:56:17,650 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:56:17,650 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 08:56:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:56:17,651 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,651 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1] [2018-07-25 08:56:17,651 INFO L415 AbstractCegarLoop]: === Iteration 75 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,651 INFO L82 PathProgramCache]: Analyzing trace with hash 399905389, now seen corresponding path program 72 times [2018-07-25 08:56:17,652 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 325 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:17,733 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:17,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:56:17,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:56:17,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:56:17,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:56:17,735 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 28 states. [2018-07-25 08:56:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,776 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2018-07-25 08:56:17,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:56:17,777 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:56:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,777 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:56:17,778 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:56:17,778 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:56:17,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:56:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 08:56:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:56:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2018-07-25 08:56:17,802 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2018-07-25 08:56:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,802 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2018-07-25 08:56:17,802 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:56:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2018-07-25 08:56:17,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 08:56:17,803 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,803 INFO L354 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1] [2018-07-25 08:56:17,804 INFO L415 AbstractCegarLoop]: === Iteration 76 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,804 INFO L82 PathProgramCache]: Analyzing trace with hash -487896351, now seen corresponding path program 73 times [2018-07-25 08:56:17,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:17,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:17,929 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:56:17,929 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:56:17,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:56:17,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:56:17,930 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 28 states. [2018-07-25 08:56:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:18,173 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2018-07-25 08:56:18,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:56:18,173 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2018-07-25 08:56:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:18,174 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:56:18,174 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:56:18,175 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:56:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:56:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 58. [2018-07-25 08:56:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:56:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2018-07-25 08:56:18,202 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 55 [2018-07-25 08:56:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:18,203 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2018-07-25 08:56:18,203 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:56:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2018-07-25 08:56:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:56:18,204 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:18,204 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1] [2018-07-25 08:56:18,204 INFO L415 AbstractCegarLoop]: === Iteration 77 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:18,204 INFO L82 PathProgramCache]: Analyzing trace with hash 2055020781, now seen corresponding path program 74 times [2018-07-25 08:56:18,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 351 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:18,281 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:18,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:56:18,282 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:56:18,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:56:18,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:56:18,283 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 29 states. [2018-07-25 08:56:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:18,381 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2018-07-25 08:56:18,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:56:18,381 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-25 08:56:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:18,382 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:56:18,382 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:56:18,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:56:18,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:56:18,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:56:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:56:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 08:56:18,409 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 56 [2018-07-25 08:56:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:18,410 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 08:56:18,410 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:56:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 08:56:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:56:18,410 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:18,410 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1] [2018-07-25 08:56:18,411 INFO L415 AbstractCegarLoop]: === Iteration 78 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:18,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1399171577, now seen corresponding path program 75 times [2018-07-25 08:56:18,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 351 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:18,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:18,497 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:56:18,498 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:56:18,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:56:18,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:56:18,499 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 29 states. [2018-07-25 08:56:18,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:18,547 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-07-25 08:56:18,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:56:18,547 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-25 08:56:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:18,548 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:56:18,548 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:56:18,548 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:56:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:56:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 08:56:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:56:18,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2018-07-25 08:56:18,580 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 56 [2018-07-25 08:56:18,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:18,580 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2018-07-25 08:56:18,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:56:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2018-07-25 08:56:18,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:56:18,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:18,581 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1] [2018-07-25 08:56:18,581 INFO L415 AbstractCegarLoop]: === Iteration 79 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:18,582 INFO L82 PathProgramCache]: Analyzing trace with hash -424707449, now seen corresponding path program 76 times [2018-07-25 08:56:18,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:18,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:18,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:56:18,728 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:56:18,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:56:18,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:56:18,729 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 29 states. [2018-07-25 08:56:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:18,984 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2018-07-25 08:56:18,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:56:18,984 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 57 [2018-07-25 08:56:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:18,985 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:56:18,985 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:56:18,985 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:56:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:56:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 60. [2018-07-25 08:56:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:56:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-07-25 08:56:19,015 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 57 [2018-07-25 08:56:19,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,015 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-07-25 08:56:19,015 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:56:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-07-25 08:56:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:56:19,016 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,016 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1] [2018-07-25 08:56:19,017 INFO L415 AbstractCegarLoop]: === Iteration 80 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,017 INFO L82 PathProgramCache]: Analyzing trace with hash -281090553, now seen corresponding path program 77 times [2018-07-25 08:56:19,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 378 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:19,098 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:19,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:56:19,098 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:56:19,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:56:19,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:56:19,099 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 30 states. [2018-07-25 08:56:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:19,204 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2018-07-25 08:56:19,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:56:19,204 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:56:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:19,205 INFO L225 Difference]: With dead ends: 90 [2018-07-25 08:56:19,205 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:56:19,205 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:56:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:56:19,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:56:19,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:56:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-25 08:56:19,232 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 58 [2018-07-25 08:56:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,232 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-25 08:56:19,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:56:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-25 08:56:19,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:56:19,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,233 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1] [2018-07-25 08:56:19,233 INFO L415 AbstractCegarLoop]: === Iteration 81 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,233 INFO L82 PathProgramCache]: Analyzing trace with hash 13128749, now seen corresponding path program 78 times [2018-07-25 08:56:19,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 378 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:19,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:19,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:56:19,319 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:56:19,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:56:19,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:56:19,320 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 30 states. [2018-07-25 08:56:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:19,374 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2018-07-25 08:56:19,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:56:19,374 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:56:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:19,375 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:56:19,375 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 08:56:19,375 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:56:19,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 08:56:19,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 08:56:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:56:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2018-07-25 08:56:19,405 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 58 [2018-07-25 08:56:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,406 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2018-07-25 08:56:19,406 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:56:19,406 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2018-07-25 08:56:19,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:56:19,407 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,407 INFO L354 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1] [2018-07-25 08:56:19,407 INFO L415 AbstractCegarLoop]: === Iteration 82 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,407 INFO L82 PathProgramCache]: Analyzing trace with hash 406929697, now seen corresponding path program 79 times [2018-07-25 08:56:19,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:19,532 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:19,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:56:19,532 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:56:19,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:56:19,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:56:19,533 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 30 states. [2018-07-25 08:56:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:19,784 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2018-07-25 08:56:19,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:56:19,785 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 59 [2018-07-25 08:56:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:19,785 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:56:19,786 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:56:19,786 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:56:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:56:19,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 62. [2018-07-25 08:56:19,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:56:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2018-07-25 08:56:19,818 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 59 [2018-07-25 08:56:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,818 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2018-07-25 08:56:19,818 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:56:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2018-07-25 08:56:19,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:56:19,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,819 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1] [2018-07-25 08:56:19,820 INFO L415 AbstractCegarLoop]: === Iteration 83 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,820 INFO L82 PathProgramCache]: Analyzing trace with hash -270142803, now seen corresponding path program 80 times [2018-07-25 08:56:19,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 406 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:19,919 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:19,919 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:56:19,920 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:56:19,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:56:19,920 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:56:19,921 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 31 states. [2018-07-25 08:56:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,040 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2018-07-25 08:56:20,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:56:20,040 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-25 08:56:20,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,041 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:56:20,041 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:56:20,042 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:56:20,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:56:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:56:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:56:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 08:56:20,076 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 60 [2018-07-25 08:56:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,077 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 08:56:20,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:56:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 08:56:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:56:20,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,078 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1] [2018-07-25 08:56:20,078 INFO L415 AbstractCegarLoop]: === Iteration 84 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:20,078 INFO L82 PathProgramCache]: Analyzing trace with hash 260720967, now seen corresponding path program 81 times [2018-07-25 08:56:20,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,189 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 406 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:20,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:56:20,190 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:56:20,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:56:20,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:56:20,191 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 31 states. [2018-07-25 08:56:20,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,250 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-07-25 08:56:20,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:56:20,250 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-25 08:56:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,251 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:56:20,251 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:56:20,252 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:56:20,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:56:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 08:56:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:56:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2018-07-25 08:56:20,286 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 60 [2018-07-25 08:56:20,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,287 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2018-07-25 08:56:20,287 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:56:20,287 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2018-07-25 08:56:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 08:56:20,288 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,288 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1] [2018-07-25 08:56:20,288 INFO L415 AbstractCegarLoop]: === Iteration 85 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:20,288 INFO L82 PathProgramCache]: Analyzing trace with hash -507646137, now seen corresponding path program 82 times [2018-07-25 08:56:20,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,460 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:20,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:56:20,461 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:56:20,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:56:20,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:56:20,463 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 31 states. [2018-07-25 08:56:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,712 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2018-07-25 08:56:20,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:56:20,712 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 61 [2018-07-25 08:56:20,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,713 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:56:20,713 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:56:20,714 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:56:20,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:56:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 64. [2018-07-25 08:56:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:56:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2018-07-25 08:56:20,748 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 61 [2018-07-25 08:56:20,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,748 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2018-07-25 08:56:20,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:56:20,748 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2018-07-25 08:56:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:56:20,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,749 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1] [2018-07-25 08:56:20,750 INFO L415 AbstractCegarLoop]: === Iteration 86 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:20,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1442777415, now seen corresponding path program 83 times [2018-07-25 08:56:20,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 435 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,835 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:20,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:56:20,835 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:56:20,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:56:20,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:56:20,836 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 32 states. [2018-07-25 08:56:20,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,946 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2018-07-25 08:56:20,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:56:20,946 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:56:20,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,947 INFO L225 Difference]: With dead ends: 96 [2018-07-25 08:56:20,947 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:56:20,948 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:56:20,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:56:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:56:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:56:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 08:56:20,978 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 62 [2018-07-25 08:56:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,979 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 08:56:20,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:56:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 08:56:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:56:20,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,980 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1] [2018-07-25 08:56:20,981 INFO L415 AbstractCegarLoop]: === Iteration 87 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:20,981 INFO L82 PathProgramCache]: Analyzing trace with hash 719685101, now seen corresponding path program 84 times [2018-07-25 08:56:20,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 435 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:21,068 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:21,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:56:21,068 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:56:21,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:56:21,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:56:21,069 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 32 states. [2018-07-25 08:56:21,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:21,118 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2018-07-25 08:56:21,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:56:21,118 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:56:21,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:21,119 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:56:21,120 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:56:21,121 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:56:21,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:56:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 08:56:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:56:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2018-07-25 08:56:21,151 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2018-07-25 08:56:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:21,152 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2018-07-25 08:56:21,152 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:56:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2018-07-25 08:56:21,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:56:21,152 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:21,153 INFO L354 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1] [2018-07-25 08:56:21,153 INFO L415 AbstractCegarLoop]: === Iteration 88 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:21,153 INFO L82 PathProgramCache]: Analyzing trace with hash 835340129, now seen corresponding path program 85 times [2018-07-25 08:56:21,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:21,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:21,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:56:21,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:56:21,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:56:21,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:56:21,278 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 32 states. [2018-07-25 08:56:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:21,537 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2018-07-25 08:56:21,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:56:21,537 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 63 [2018-07-25 08:56:21,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:21,538 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:56:21,538 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:56:21,539 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:56:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:56:21,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 66. [2018-07-25 08:56:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:56:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2018-07-25 08:56:21,572 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 63 [2018-07-25 08:56:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:21,573 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2018-07-25 08:56:21,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:56:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2018-07-25 08:56:21,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:56:21,573 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:21,574 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1] [2018-07-25 08:56:21,574 INFO L415 AbstractCegarLoop]: === Iteration 89 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:21,574 INFO L82 PathProgramCache]: Analyzing trace with hash 125678701, now seen corresponding path program 86 times [2018-07-25 08:56:21,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 465 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:21,653 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:21,653 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:56:21,653 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:56:21,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:56:21,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:56:21,654 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 33 states. [2018-07-25 08:56:21,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:21,778 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2018-07-25 08:56:21,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:56:21,779 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-25 08:56:21,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:21,779 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:56:21,780 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:56:21,780 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:56:21,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:56:21,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:56:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:56:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-25 08:56:21,818 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 64 [2018-07-25 08:56:21,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:21,818 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-25 08:56:21,818 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:56:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-25 08:56:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:56:21,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:21,819 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1] [2018-07-25 08:56:21,819 INFO L415 AbstractCegarLoop]: === Iteration 90 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:21,819 INFO L82 PathProgramCache]: Analyzing trace with hash -815346553, now seen corresponding path program 87 times [2018-07-25 08:56:21,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 465 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:21,907 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:21,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:56:21,908 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:56:21,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:56:21,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:56:21,909 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 33 states. [2018-07-25 08:56:21,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:21,967 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-07-25 08:56:21,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:56:21,967 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-25 08:56:21,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:21,968 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:56:21,968 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 08:56:21,968 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:56:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 08:56:22,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 08:56:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:56:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2018-07-25 08:56:22,003 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 64 [2018-07-25 08:56:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:22,003 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2018-07-25 08:56:22,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:56:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2018-07-25 08:56:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:56:22,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:22,004 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1] [2018-07-25 08:56:22,005 INFO L415 AbstractCegarLoop]: === Iteration 91 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:22,005 INFO L82 PathProgramCache]: Analyzing trace with hash 493999111, now seen corresponding path program 88 times [2018-07-25 08:56:22,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:22,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:22,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:56:22,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:56:22,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:56:22,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:56:22,126 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 33 states. [2018-07-25 08:56:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:22,397 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2018-07-25 08:56:22,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:56:22,398 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 65 [2018-07-25 08:56:22,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:22,398 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:56:22,399 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:56:22,399 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:56:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:56:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 68. [2018-07-25 08:56:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:56:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2018-07-25 08:56:22,438 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 65 [2018-07-25 08:56:22,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:22,439 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2018-07-25 08:56:22,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:56:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2018-07-25 08:56:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:56:22,440 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:22,440 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1] [2018-07-25 08:56:22,440 INFO L415 AbstractCegarLoop]: === Iteration 92 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:22,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1865958265, now seen corresponding path program 89 times [2018-07-25 08:56:22,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 496 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:22,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:22,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:56:22,523 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:56:22,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:56:22,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:56:22,524 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 34 states. [2018-07-25 08:56:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:22,652 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2018-07-25 08:56:22,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:56:22,653 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:56:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:22,653 INFO L225 Difference]: With dead ends: 102 [2018-07-25 08:56:22,653 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:56:22,654 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:56:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:56:22,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:56:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:56:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 08:56:22,689 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 66 [2018-07-25 08:56:22,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:22,689 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 08:56:22,689 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:56:22,689 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 08:56:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:56:22,690 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:22,690 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1] [2018-07-25 08:56:22,690 INFO L415 AbstractCegarLoop]: === Iteration 93 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:22,690 INFO L82 PathProgramCache]: Analyzing trace with hash -972970067, now seen corresponding path program 90 times [2018-07-25 08:56:22,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 496 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:22,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:22,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:56:22,774 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:56:22,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:56:22,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:56:22,775 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 34 states. [2018-07-25 08:56:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:22,831 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2018-07-25 08:56:22,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:56:22,831 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:56:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:22,832 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:56:22,832 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:56:22,833 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:56:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:56:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 08:56:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:56:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2018-07-25 08:56:22,869 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 66 [2018-07-25 08:56:22,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:22,869 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2018-07-25 08:56:22,869 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:56:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2018-07-25 08:56:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 08:56:22,870 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:22,870 INFO L354 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1] [2018-07-25 08:56:22,870 INFO L415 AbstractCegarLoop]: === Iteration 94 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:22,870 INFO L82 PathProgramCache]: Analyzing trace with hash -97362527, now seen corresponding path program 91 times [2018-07-25 08:56:22,871 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:23,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:23,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:56:23,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:56:23,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:56:23,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:56:23,011 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 34 states. [2018-07-25 08:56:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:23,278 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-07-25 08:56:23,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:56:23,279 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 67 [2018-07-25 08:56:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:23,280 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:56:23,280 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:56:23,280 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:56:23,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:56:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 70. [2018-07-25 08:56:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:56:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2018-07-25 08:56:23,352 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 67 [2018-07-25 08:56:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:23,353 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2018-07-25 08:56:23,353 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:56:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2018-07-25 08:56:23,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:56:23,354 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:23,354 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1] [2018-07-25 08:56:23,354 INFO L415 AbstractCegarLoop]: === Iteration 95 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:23,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1276667437, now seen corresponding path program 92 times [2018-07-25 08:56:23,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 528 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:23,429 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:23,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:56:23,430 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:56:23,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:56:23,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:56:23,431 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 35 states. [2018-07-25 08:56:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:23,549 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2018-07-25 08:56:23,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:56:23,549 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-25 08:56:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:23,550 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:56:23,550 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:56:23,551 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:56:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:56:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:56:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:56:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 08:56:23,586 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 68 [2018-07-25 08:56:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:23,587 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 08:56:23,587 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:56:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 08:56:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:56:23,588 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:23,588 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1] [2018-07-25 08:56:23,588 INFO L415 AbstractCegarLoop]: === Iteration 96 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:23,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1105469497, now seen corresponding path program 93 times [2018-07-25 08:56:23,588 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 528 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:23,668 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:23,668 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:56:23,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:56:23,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:56:23,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:56:23,669 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 35 states. [2018-07-25 08:56:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:23,724 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-07-25 08:56:23,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:56:23,724 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-25 08:56:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:23,725 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:56:23,725 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:56:23,726 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:56:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:56:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 08:56:23,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:56:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2018-07-25 08:56:23,762 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 68 [2018-07-25 08:56:23,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:23,762 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2018-07-25 08:56:23,763 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:56:23,763 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2018-07-25 08:56:23,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:56:23,765 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:23,765 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1] [2018-07-25 08:56:23,765 INFO L415 AbstractCegarLoop]: === Iteration 97 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:23,765 INFO L82 PathProgramCache]: Analyzing trace with hash 90122439, now seen corresponding path program 94 times [2018-07-25 08:56:23,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:23,894 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:23,894 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:56:23,894 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:56:23,895 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:56:23,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:56:23,895 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 35 states. [2018-07-25 08:56:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:24,171 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2018-07-25 08:56:24,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:56:24,171 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 69 [2018-07-25 08:56:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:24,172 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:56:24,172 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:56:24,172 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:56:24,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:56:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 72. [2018-07-25 08:56:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:56:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2018-07-25 08:56:24,214 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 69 [2018-07-25 08:56:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:24,215 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2018-07-25 08:56:24,215 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:56:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2018-07-25 08:56:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:56:24,215 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:24,216 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1] [2018-07-25 08:56:24,216 INFO L415 AbstractCegarLoop]: === Iteration 98 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:24,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1501233209, now seen corresponding path program 95 times [2018-07-25 08:56:24,216 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 561 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:24,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:24,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:56:24,300 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:56:24,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:56:24,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:56:24,301 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 36 states. [2018-07-25 08:56:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:24,435 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2018-07-25 08:56:24,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:56:24,435 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:56:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:24,436 INFO L225 Difference]: With dead ends: 108 [2018-07-25 08:56:24,436 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:56:24,436 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:56:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:56:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:56:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:56:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-25 08:56:24,476 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 70 [2018-07-25 08:56:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:24,476 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-25 08:56:24,476 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:56:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-25 08:56:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:56:24,477 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:24,477 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1] [2018-07-25 08:56:24,477 INFO L415 AbstractCegarLoop]: === Iteration 99 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:24,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1961933165, now seen corresponding path program 96 times [2018-07-25 08:56:24,478 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 561 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:24,567 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:24,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:56:24,568 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:56:24,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:56:24,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:56:24,569 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 36 states. [2018-07-25 08:56:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:24,628 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2018-07-25 08:56:24,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:56:24,628 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:56:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:24,629 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:56:24,629 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 08:56:24,630 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:56:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 08:56:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 08:56:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:56:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2018-07-25 08:56:24,670 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 70 [2018-07-25 08:56:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:24,671 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2018-07-25 08:56:24,671 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:56:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2018-07-25 08:56:24,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:56:24,672 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:24,672 INFO L354 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1] [2018-07-25 08:56:24,672 INFO L415 AbstractCegarLoop]: === Iteration 100 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:24,672 INFO L82 PathProgramCache]: Analyzing trace with hash 690324449, now seen corresponding path program 97 times [2018-07-25 08:56:24,672 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:24,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:24,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:56:24,817 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:56:24,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:56:24,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:56:24,818 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 36 states. [2018-07-25 08:56:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:25,127 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2018-07-25 08:56:25,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:56:25,127 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 71 [2018-07-25 08:56:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:25,128 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:56:25,128 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:56:25,129 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:56:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:56:25,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 74. [2018-07-25 08:56:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:56:25,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2018-07-25 08:56:25,176 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 71 [2018-07-25 08:56:25,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:25,176 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2018-07-25 08:56:25,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:56:25,176 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2018-07-25 08:56:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:56:25,177 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:25,177 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1] [2018-07-25 08:56:25,178 INFO L415 AbstractCegarLoop]: === Iteration 101 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:25,178 INFO L82 PathProgramCache]: Analyzing trace with hash -74840083, now seen corresponding path program 98 times [2018-07-25 08:56:25,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 595 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:25,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:25,268 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:56:25,268 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:56:25,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:56:25,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:56:25,269 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 37 states. [2018-07-25 08:56:25,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:25,388 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2018-07-25 08:56:25,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:56:25,388 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-25 08:56:25,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:25,389 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:56:25,389 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:56:25,389 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:56:25,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:56:25,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:56:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:56:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 08:56:25,436 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 72 [2018-07-25 08:56:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:25,436 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 08:56:25,436 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:56:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 08:56:25,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:56:25,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:25,437 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1] [2018-07-25 08:56:25,438 INFO L415 AbstractCegarLoop]: === Iteration 102 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash -90864889, now seen corresponding path program 99 times [2018-07-25 08:56:25,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 595 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:25,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:25,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:56:25,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:56:25,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:56:25,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:56:25,543 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 37 states. [2018-07-25 08:56:25,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:25,615 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2018-07-25 08:56:25,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:56:25,615 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-25 08:56:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:25,616 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:56:25,616 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:56:25,617 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:56:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:56:25,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 08:56:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:56:25,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2018-07-25 08:56:25,669 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 72 [2018-07-25 08:56:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:25,669 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2018-07-25 08:56:25,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:56:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2018-07-25 08:56:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 08:56:25,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:25,670 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1] [2018-07-25 08:56:25,670 INFO L415 AbstractCegarLoop]: === Iteration 103 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:25,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1478094215, now seen corresponding path program 100 times [2018-07-25 08:56:25,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:25,827 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:25,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:56:25,828 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:56:25,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:56:25,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:56:25,829 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 37 states. [2018-07-25 08:56:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:26,137 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2018-07-25 08:56:26,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:56:26,137 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 73 [2018-07-25 08:56:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:26,138 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:56:26,139 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:56:26,139 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:56:26,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:56:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 76. [2018-07-25 08:56:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:56:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2018-07-25 08:56:26,194 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 73 [2018-07-25 08:56:26,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:26,195 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2018-07-25 08:56:26,195 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:56:26,195 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2018-07-25 08:56:26,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:56:26,196 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:26,196 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1] [2018-07-25 08:56:26,196 INFO L415 AbstractCegarLoop]: === Iteration 104 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:26,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1423781113, now seen corresponding path program 101 times [2018-07-25 08:56:26,197 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 630 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:26,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:26,314 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:56:26,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:56:26,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:56:26,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:56:26,316 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 38 states. [2018-07-25 08:56:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:26,475 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2018-07-25 08:56:26,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:56:26,475 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:56:26,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:26,476 INFO L225 Difference]: With dead ends: 114 [2018-07-25 08:56:26,476 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:56:26,477 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:56:26,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:56:26,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:56:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:56:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 08:56:26,533 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 74 [2018-07-25 08:56:26,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:26,534 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 08:56:26,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:56:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 08:56:26,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:56:26,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:26,535 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1] [2018-07-25 08:56:26,535 INFO L415 AbstractCegarLoop]: === Iteration 105 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:26,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1920550099, now seen corresponding path program 102 times [2018-07-25 08:56:26,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 630 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:26,703 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:26,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:56:26,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:56:26,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:56:26,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:56:26,704 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 38 states. [2018-07-25 08:56:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:26,772 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2018-07-25 08:56:26,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:56:26,772 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:56:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:26,773 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:56:26,773 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:56:26,774 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:56:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:56:26,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 08:56:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:56:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2018-07-25 08:56:26,828 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2018-07-25 08:56:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:26,828 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2018-07-25 08:56:26,828 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:56:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2018-07-25 08:56:26,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:56:26,829 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:26,829 INFO L354 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1] [2018-07-25 08:56:26,829 INFO L415 AbstractCegarLoop]: === Iteration 106 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:26,830 INFO L82 PathProgramCache]: Analyzing trace with hash 592427553, now seen corresponding path program 103 times [2018-07-25 08:56:26,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:26,991 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:26,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:56:26,995 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:56:26,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:56:26,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:56:26,996 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 38 states. [2018-07-25 08:56:27,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:27,339 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2018-07-25 08:56:27,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:56:27,339 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 75 [2018-07-25 08:56:27,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:27,341 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:56:27,341 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:56:27,341 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:56:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:56:27,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 78. [2018-07-25 08:56:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:56:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2018-07-25 08:56:27,407 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 75 [2018-07-25 08:56:27,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:27,407 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2018-07-25 08:56:27,407 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:56:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2018-07-25 08:56:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:56:27,408 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:27,408 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1] [2018-07-25 08:56:27,408 INFO L415 AbstractCegarLoop]: === Iteration 107 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:27,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1185323437, now seen corresponding path program 104 times [2018-07-25 08:56:27,409 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 666 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:27,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:27,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:56:27,513 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:56:27,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:56:27,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:56:27,514 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 39 states. [2018-07-25 08:56:27,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:27,693 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2018-07-25 08:56:27,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:56:27,694 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-25 08:56:27,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:27,695 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:56:27,695 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:56:27,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:56:27,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:56:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:56:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:56:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-25 08:56:27,751 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 76 [2018-07-25 08:56:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:27,752 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-25 08:56:27,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:56:27,752 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-25 08:56:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:56:27,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:27,753 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1] [2018-07-25 08:56:27,753 INFO L415 AbstractCegarLoop]: === Iteration 108 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:27,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1329613241, now seen corresponding path program 105 times [2018-07-25 08:56:27,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 666 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:27,864 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:27,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:56:27,865 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:56:27,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:56:27,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:56:27,866 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 39 states. [2018-07-25 08:56:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:27,943 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-07-25 08:56:27,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:56:27,943 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-25 08:56:27,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:27,944 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:56:27,944 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 08:56:27,945 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:56:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 08:56:28,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 08:56:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:56:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2018-07-25 08:56:28,002 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 76 [2018-07-25 08:56:28,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:28,002 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2018-07-25 08:56:28,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:56:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2018-07-25 08:56:28,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:56:28,003 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:28,003 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1] [2018-07-25 08:56:28,003 INFO L415 AbstractCegarLoop]: === Iteration 109 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:28,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1731600967, now seen corresponding path program 106 times [2018-07-25 08:56:28,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:28,185 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:28,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:56:28,185 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:56:28,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:56:28,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:56:28,186 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 39 states. [2018-07-25 08:56:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:28,566 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2018-07-25 08:56:28,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:56:28,566 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 77 [2018-07-25 08:56:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:28,567 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:56:28,567 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:56:28,567 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:56:28,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:56:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2018-07-25 08:56:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:56:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2018-07-25 08:56:28,622 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 77 [2018-07-25 08:56:28,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:28,622 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2018-07-25 08:56:28,622 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:56:28,622 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2018-07-25 08:56:28,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:56:28,623 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:28,623 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1] [2018-07-25 08:56:28,623 INFO L415 AbstractCegarLoop]: === Iteration 110 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:28,623 INFO L82 PathProgramCache]: Analyzing trace with hash 2139960903, now seen corresponding path program 107 times [2018-07-25 08:56:28,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 703 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:28,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:28,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:56:28,728 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:56:28,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:56:28,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:56:28,728 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 40 states. [2018-07-25 08:56:28,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:28,876 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2018-07-25 08:56:28,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:56:28,876 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:56:28,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:28,877 INFO L225 Difference]: With dead ends: 120 [2018-07-25 08:56:28,877 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:56:28,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:56:28,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:56:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:56:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:56:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 08:56:28,936 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 78 [2018-07-25 08:56:28,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:28,937 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 08:56:28,937 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:56:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 08:56:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:56:28,938 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:28,938 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1] [2018-07-25 08:56:28,938 INFO L415 AbstractCegarLoop]: === Iteration 111 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:28,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1486335213, now seen corresponding path program 108 times [2018-07-25 08:56:28,938 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 703 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:29,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:29,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:56:29,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:56:29,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:56:29,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:56:29,055 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 40 states. [2018-07-25 08:56:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:29,132 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2018-07-25 08:56:29,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:56:29,133 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:56:29,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:29,133 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:56:29,133 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:56:29,134 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:56:29,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:56:29,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 08:56:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:56:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2018-07-25 08:56:29,192 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 78 [2018-07-25 08:56:29,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:29,192 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2018-07-25 08:56:29,192 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:56:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2018-07-25 08:56:29,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 08:56:29,193 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:29,193 INFO L354 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1] [2018-07-25 08:56:29,194 INFO L415 AbstractCegarLoop]: === Iteration 112 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:29,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1168310175, now seen corresponding path program 109 times [2018-07-25 08:56:29,194 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:29,388 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:29,388 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:56:29,389 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:56:29,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:56:29,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:56:29,389 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 40 states. [2018-07-25 08:56:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:29,769 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-07-25 08:56:29,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:56:29,769 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 79 [2018-07-25 08:56:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:29,770 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:56:29,770 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:56:29,770 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:56:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:56:29,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 82. [2018-07-25 08:56:29,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:56:29,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2018-07-25 08:56:29,827 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 79 [2018-07-25 08:56:29,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:29,827 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2018-07-25 08:56:29,827 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:56:29,827 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2018-07-25 08:56:29,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:56:29,828 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:29,828 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1] [2018-07-25 08:56:29,828 INFO L415 AbstractCegarLoop]: === Iteration 113 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:29,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1857938579, now seen corresponding path program 110 times [2018-07-25 08:56:29,829 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 741 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:29,935 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:29,935 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:56:29,935 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:56:29,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:56:29,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:56:29,936 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 41 states. [2018-07-25 08:56:30,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:30,137 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2018-07-25 08:56:30,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:56:30,137 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-25 08:56:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:30,137 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:56:30,138 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:56:30,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:56:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:56:30,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:56:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:56:30,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 08:56:30,187 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 80 [2018-07-25 08:56:30,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:30,187 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 08:56:30,187 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:56:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 08:56:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:56:30,188 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:30,188 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1] [2018-07-25 08:56:30,188 INFO L415 AbstractCegarLoop]: === Iteration 114 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:30,188 INFO L82 PathProgramCache]: Analyzing trace with hash -645498489, now seen corresponding path program 111 times [2018-07-25 08:56:30,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 741 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:30,288 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:30,288 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:56:30,288 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:56:30,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:56:30,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:56:30,289 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 41 states. [2018-07-25 08:56:30,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:30,357 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2018-07-25 08:56:30,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:56:30,357 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-25 08:56:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:30,358 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:56:30,358 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:56:30,358 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:56:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:56:30,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 08:56:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:56:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2018-07-25 08:56:30,413 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 80 [2018-07-25 08:56:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:30,413 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2018-07-25 08:56:30,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:56:30,413 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2018-07-25 08:56:30,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:56:30,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:30,414 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1] [2018-07-25 08:56:30,414 INFO L415 AbstractCegarLoop]: === Iteration 115 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:30,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1464321799, now seen corresponding path program 112 times [2018-07-25 08:56:30,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:30,578 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:30,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:56:30,579 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:56:30,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:56:30,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:56:30,579 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 41 states. [2018-07-25 08:56:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:30,873 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2018-07-25 08:56:30,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:56:30,873 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 81 [2018-07-25 08:56:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:30,874 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:56:30,874 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:56:30,874 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:56:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:56:30,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 84. [2018-07-25 08:56:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:56:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2018-07-25 08:56:30,915 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 81 [2018-07-25 08:56:30,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:30,915 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2018-07-25 08:56:30,916 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:56:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2018-07-25 08:56:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:56:30,916 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:30,916 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1] [2018-07-25 08:56:30,917 INFO L415 AbstractCegarLoop]: === Iteration 116 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:30,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1850726009, now seen corresponding path program 113 times [2018-07-25 08:56:30,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 780 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:31,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:31,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:56:31,014 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:56:31,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:56:31,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:56:31,015 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 42 states. [2018-07-25 08:56:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:31,181 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2018-07-25 08:56:31,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:56:31,181 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:56:31,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:31,182 INFO L225 Difference]: With dead ends: 126 [2018-07-25 08:56:31,182 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:56:31,182 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:56:31,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:56:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:56:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:56:31,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-25 08:56:31,232 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 82 [2018-07-25 08:56:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:31,232 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-25 08:56:31,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:56:31,232 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-25 08:56:31,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:56:31,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:31,233 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1] [2018-07-25 08:56:31,233 INFO L415 AbstractCegarLoop]: === Iteration 117 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:31,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1375178413, now seen corresponding path program 114 times [2018-07-25 08:56:31,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 780 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:31,347 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:31,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:56:31,348 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:56:31,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:56:31,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:56:31,349 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 42 states. [2018-07-25 08:56:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:31,427 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2018-07-25 08:56:31,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:56:31,427 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:56:31,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:31,428 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:56:31,428 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 08:56:31,428 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:56:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 08:56:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 08:56:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:56:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2018-07-25 08:56:31,482 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2018-07-25 08:56:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:31,482 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2018-07-25 08:56:31,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:56:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2018-07-25 08:56:31,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:56:31,483 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:31,483 INFO L354 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1] [2018-07-25 08:56:31,484 INFO L415 AbstractCegarLoop]: === Iteration 118 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:31,484 INFO L82 PathProgramCache]: Analyzing trace with hash -319203679, now seen corresponding path program 115 times [2018-07-25 08:56:31,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:31,661 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:31,661 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:56:31,661 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:56:31,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:56:31,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:56:31,662 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 42 states. [2018-07-25 08:56:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:32,079 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2018-07-25 08:56:32,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:56:32,079 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 83 [2018-07-25 08:56:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:32,080 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:56:32,080 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:56:32,081 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:56:32,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:56:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 86. [2018-07-25 08:56:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:56:32,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2018-07-25 08:56:32,148 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 83 [2018-07-25 08:56:32,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:32,148 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2018-07-25 08:56:32,148 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:56:32,148 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2018-07-25 08:56:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:56:32,149 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:32,149 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1] [2018-07-25 08:56:32,149 INFO L415 AbstractCegarLoop]: === Iteration 119 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:32,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1305440979, now seen corresponding path program 116 times [2018-07-25 08:56:32,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 820 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:32,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:32,272 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:56:32,272 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:56:32,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:56:32,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:56:32,273 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 43 states. [2018-07-25 08:56:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:32,449 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2018-07-25 08:56:32,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:56:32,449 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-25 08:56:32,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:32,450 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:56:32,450 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:56:32,451 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:56:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:56:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:56:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:56:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 08:56:32,507 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 84 [2018-07-25 08:56:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:32,508 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 08:56:32,508 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:56:32,508 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 08:56:32,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:56:32,508 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:32,509 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1] [2018-07-25 08:56:32,509 INFO L415 AbstractCegarLoop]: === Iteration 120 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:32,509 INFO L82 PathProgramCache]: Analyzing trace with hash -86651705, now seen corresponding path program 117 times [2018-07-25 08:56:32,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 820 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:32,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:32,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:56:32,625 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:56:32,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:56:32,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:56:32,625 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 43 states. [2018-07-25 08:56:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:32,699 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-07-25 08:56:32,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:56:32,699 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-25 08:56:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:32,700 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:56:32,700 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:56:32,700 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:56:32,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:56:32,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 08:56:32,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:56:32,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2018-07-25 08:56:32,751 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 84 [2018-07-25 08:56:32,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:32,751 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2018-07-25 08:56:32,751 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:56:32,751 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2018-07-25 08:56:32,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 08:56:32,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:32,752 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1] [2018-07-25 08:56:32,752 INFO L415 AbstractCegarLoop]: === Iteration 121 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:32,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1608702919, now seen corresponding path program 118 times [2018-07-25 08:56:32,752 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:32,940 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:32,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:56:32,940 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:56:32,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:56:32,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:56:32,941 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 43 states. [2018-07-25 08:56:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:33,419 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2018-07-25 08:56:33,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:56:33,419 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 85 [2018-07-25 08:56:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:33,420 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:56:33,420 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:56:33,421 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:56:33,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:56:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 88. [2018-07-25 08:56:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:56:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2018-07-25 08:56:33,489 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 85 [2018-07-25 08:56:33,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:33,490 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2018-07-25 08:56:33,490 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:56:33,490 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2018-07-25 08:56:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:56:33,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:33,491 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1] [2018-07-25 08:56:33,491 INFO L415 AbstractCegarLoop]: === Iteration 122 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:33,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1669878585, now seen corresponding path program 119 times [2018-07-25 08:56:33,491 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 861 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:33,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:33,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:56:33,650 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:56:33,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:56:33,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:56:33,651 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 44 states. [2018-07-25 08:56:33,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:33,865 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2018-07-25 08:56:33,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:56:33,865 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:56:33,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:33,866 INFO L225 Difference]: With dead ends: 132 [2018-07-25 08:56:33,866 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:56:33,866 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:56:33,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:56:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:56:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:56:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 08:56:33,925 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 86 [2018-07-25 08:56:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:33,925 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 08:56:33,926 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:56:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 08:56:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:56:33,926 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:33,926 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1] [2018-07-25 08:56:33,927 INFO L415 AbstractCegarLoop]: === Iteration 123 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:33,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1752850541, now seen corresponding path program 120 times [2018-07-25 08:56:33,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 861 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:34,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:34,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:56:34,041 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:56:34,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:56:34,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:56:34,042 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 44 states. [2018-07-25 08:56:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:34,118 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2018-07-25 08:56:34,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:56:34,119 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:56:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:34,119 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:56:34,119 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:56:34,120 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:56:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:56:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 08:56:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:56:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2018-07-25 08:56:34,174 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2018-07-25 08:56:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:34,174 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2018-07-25 08:56:34,174 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:56:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2018-07-25 08:56:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:56:34,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:34,175 INFO L354 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1] [2018-07-25 08:56:34,175 INFO L415 AbstractCegarLoop]: === Iteration 124 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:34,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1496269599, now seen corresponding path program 121 times [2018-07-25 08:56:34,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:34,359 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:34,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:56:34,360 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:56:34,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:56:34,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:56:34,360 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 44 states. [2018-07-25 08:56:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:34,794 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2018-07-25 08:56:34,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:56:34,795 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 87 [2018-07-25 08:56:34,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:34,795 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:56:34,795 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:56:34,796 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:56:34,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:56:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 90. [2018-07-25 08:56:34,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:56:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2018-07-25 08:56:34,847 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 87 [2018-07-25 08:56:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:34,848 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2018-07-25 08:56:34,848 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:56:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2018-07-25 08:56:34,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:56:34,848 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:34,848 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1] [2018-07-25 08:56:34,849 INFO L415 AbstractCegarLoop]: === Iteration 125 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:34,849 INFO L82 PathProgramCache]: Analyzing trace with hash 860221165, now seen corresponding path program 122 times [2018-07-25 08:56:34,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 903 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:34,963 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:34,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:56:34,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:56:34,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:56:34,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:56:34,965 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 45 states. [2018-07-25 08:56:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:35,145 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2018-07-25 08:56:35,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:56:35,145 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-25 08:56:35,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:35,146 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:56:35,146 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:56:35,146 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:56:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:56:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:56:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:56:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-25 08:56:35,195 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 88 [2018-07-25 08:56:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:35,195 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-25 08:56:35,195 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:56:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-25 08:56:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:56:35,195 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:35,196 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1] [2018-07-25 08:56:35,196 INFO L415 AbstractCegarLoop]: === Iteration 126 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:35,196 INFO L82 PathProgramCache]: Analyzing trace with hash -409358329, now seen corresponding path program 123 times [2018-07-25 08:56:35,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 903 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:35,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:35,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:56:35,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:56:35,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:56:35,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:56:35,306 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 45 states. [2018-07-25 08:56:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:35,375 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-07-25 08:56:35,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:56:35,375 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-25 08:56:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:35,375 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:56:35,375 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 08:56:35,376 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:56:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 08:56:35,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 08:56:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:56:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2018-07-25 08:56:35,418 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 88 [2018-07-25 08:56:35,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:35,418 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2018-07-25 08:56:35,418 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:56:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2018-07-25 08:56:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:56:35,419 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:35,419 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1] [2018-07-25 08:56:35,419 INFO L415 AbstractCegarLoop]: === Iteration 127 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:35,419 INFO L82 PathProgramCache]: Analyzing trace with hash 194732167, now seen corresponding path program 124 times [2018-07-25 08:56:35,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:35,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:35,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:56:35,585 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:56:35,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:56:35,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:56:35,586 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 45 states. [2018-07-25 08:56:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:35,928 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2018-07-25 08:56:35,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:56:35,928 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 89 [2018-07-25 08:56:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:35,928 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:56:35,929 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:56:35,929 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:56:35,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:56:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2018-07-25 08:56:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:56:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2018-07-25 08:56:35,984 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 89 [2018-07-25 08:56:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:35,984 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2018-07-25 08:56:35,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:56:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2018-07-25 08:56:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:56:35,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:35,985 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1] [2018-07-25 08:56:35,985 INFO L415 AbstractCegarLoop]: === Iteration 128 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:35,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1741668359, now seen corresponding path program 125 times [2018-07-25 08:56:35,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 946 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:36,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:36,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:56:36,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:56:36,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:56:36,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:56:36,083 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 46 states. [2018-07-25 08:56:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:36,221 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2018-07-25 08:56:36,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:56:36,222 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:56:36,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:36,222 INFO L225 Difference]: With dead ends: 138 [2018-07-25 08:56:36,223 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:56:36,223 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:56:36,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:56:36,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:56:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:56:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 08:56:36,268 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 90 [2018-07-25 08:56:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:36,268 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 08:56:36,268 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:56:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 08:56:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:56:36,269 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:36,269 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1] [2018-07-25 08:56:36,269 INFO L415 AbstractCegarLoop]: === Iteration 129 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1039409709, now seen corresponding path program 126 times [2018-07-25 08:56:36,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 946 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:36,360 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:36,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:56:36,361 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:56:36,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:56:36,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:56:36,361 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 46 states. [2018-07-25 08:56:36,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:36,438 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2018-07-25 08:56:36,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:56:36,438 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:56:36,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:36,439 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:56:36,439 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:56:36,439 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:56:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:56:36,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 08:56:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:56:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2018-07-25 08:56:36,497 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 90 [2018-07-25 08:56:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:36,498 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2018-07-25 08:56:36,498 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:56:36,498 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2018-07-25 08:56:36,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 08:56:36,499 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:36,499 INFO L354 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1] [2018-07-25 08:56:36,499 INFO L415 AbstractCegarLoop]: === Iteration 130 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash -2138098911, now seen corresponding path program 127 times [2018-07-25 08:56:36,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:36,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:36,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:56:36,678 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:56:36,678 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:56:36,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:56:36,679 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 46 states. [2018-07-25 08:56:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:36,996 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2018-07-25 08:56:36,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:56:36,996 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 91 [2018-07-25 08:56:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:36,997 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:56:36,997 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:56:36,997 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:56:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:56:37,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 94. [2018-07-25 08:56:37,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:56:37,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2018-07-25 08:56:37,045 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 91 [2018-07-25 08:56:37,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:37,046 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2018-07-25 08:56:37,046 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:56:37,046 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2018-07-25 08:56:37,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:56:37,046 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:37,046 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1] [2018-07-25 08:56:37,046 INFO L415 AbstractCegarLoop]: === Iteration 131 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:37,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1856618323, now seen corresponding path program 128 times [2018-07-25 08:56:37,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 990 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:37,131 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:37,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:56:37,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:56:37,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:56:37,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:56:37,132 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 47 states. [2018-07-25 08:56:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:37,267 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2018-07-25 08:56:37,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:56:37,267 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-25 08:56:37,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:37,268 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:56:37,268 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:56:37,269 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:56:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:56:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:56:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:56:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 08:56:37,328 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 92 [2018-07-25 08:56:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:37,328 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 08:56:37,328 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:56:37,328 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 08:56:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:56:37,329 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:37,329 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1] [2018-07-25 08:56:37,329 INFO L415 AbstractCegarLoop]: === Iteration 132 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:37,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2143167303, now seen corresponding path program 129 times [2018-07-25 08:56:37,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 990 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:37,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:37,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:56:37,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:56:37,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:56:37,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:56:37,450 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 47 states. [2018-07-25 08:56:37,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:37,526 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-07-25 08:56:37,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:56:37,526 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-25 08:56:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:37,527 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:56:37,527 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:56:37,527 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:56:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:56:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 08:56:37,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:56:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2018-07-25 08:56:37,576 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 92 [2018-07-25 08:56:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:37,576 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2018-07-25 08:56:37,577 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:56:37,577 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2018-07-25 08:56:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:56:37,577 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:37,577 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1] [2018-07-25 08:56:37,578 INFO L415 AbstractCegarLoop]: === Iteration 133 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:37,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2013615431, now seen corresponding path program 130 times [2018-07-25 08:56:37,578 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:37,729 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:37,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:56:37,729 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:56:37,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:56:37,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:56:37,729 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 47 states. [2018-07-25 08:56:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:38,029 INFO L93 Difference]: Finished difference Result 143 states and 145 transitions. [2018-07-25 08:56:38,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:56:38,029 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 93 [2018-07-25 08:56:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:38,030 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:56:38,030 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:56:38,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:56:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:56:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 96. [2018-07-25 08:56:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:56:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2018-07-25 08:56:38,077 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 93 [2018-07-25 08:56:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:38,077 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2018-07-25 08:56:38,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:56:38,077 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2018-07-25 08:56:38,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:56:38,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:38,078 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1] [2018-07-25 08:56:38,078 INFO L415 AbstractCegarLoop]: === Iteration 134 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:38,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2002492601, now seen corresponding path program 131 times [2018-07-25 08:56:38,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1035 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:38,170 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:38,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:56:38,171 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:56:38,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:56:38,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:56:38,171 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 48 states. [2018-07-25 08:56:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:38,306 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2018-07-25 08:56:38,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:56:38,307 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:56:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:38,307 INFO L225 Difference]: With dead ends: 144 [2018-07-25 08:56:38,307 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:56:38,308 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:56:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:56:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:56:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:56:38,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-25 08:56:38,360 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 94 [2018-07-25 08:56:38,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:38,361 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-25 08:56:38,361 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:56:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-25 08:56:38,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:56:38,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:38,361 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1] [2018-07-25 08:56:38,361 INFO L415 AbstractCegarLoop]: === Iteration 135 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:38,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1731777517, now seen corresponding path program 132 times [2018-07-25 08:56:38,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1035 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:38,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:38,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:56:38,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:56:38,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:56:38,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:56:38,489 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 48 states. [2018-07-25 08:56:38,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:38,570 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2018-07-25 08:56:38,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:56:38,570 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:56:38,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:38,570 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:56:38,570 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 08:56:38,571 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:56:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 08:56:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 08:56:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:56:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2018-07-25 08:56:38,615 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 94 [2018-07-25 08:56:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:38,615 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2018-07-25 08:56:38,616 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:56:38,616 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2018-07-25 08:56:38,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:56:38,616 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:38,616 INFO L354 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1] [2018-07-25 08:56:38,616 INFO L415 AbstractCegarLoop]: === Iteration 136 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:38,616 INFO L82 PathProgramCache]: Analyzing trace with hash 2145433953, now seen corresponding path program 133 times [2018-07-25 08:56:38,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:38,761 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:38,761 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:56:38,761 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:56:38,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:56:38,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:56:38,762 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 48 states. [2018-07-25 08:56:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:39,077 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2018-07-25 08:56:39,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:56:39,077 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 95 [2018-07-25 08:56:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:39,077 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:56:39,077 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:56:39,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:56:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:56:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 98. [2018-07-25 08:56:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:56:39,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2018-07-25 08:56:39,127 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 95 [2018-07-25 08:56:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:39,127 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2018-07-25 08:56:39,127 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:56:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2018-07-25 08:56:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:56:39,128 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:39,128 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1] [2018-07-25 08:56:39,128 INFO L415 AbstractCegarLoop]: === Iteration 137 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2083881581, now seen corresponding path program 134 times [2018-07-25 08:56:39,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1081 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:39,220 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:39,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:56:39,221 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:56:39,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:56:39,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:56:39,221 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 49 states. [2018-07-25 08:56:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:39,442 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2018-07-25 08:56:39,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:56:39,442 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-25 08:56:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:39,443 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:56:39,443 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:56:39,444 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:56:39,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:56:39,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:56:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:56:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 08:56:39,502 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 96 [2018-07-25 08:56:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:39,503 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 08:56:39,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:56:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 08:56:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:56:39,503 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:39,504 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1] [2018-07-25 08:56:39,504 INFO L415 AbstractCegarLoop]: === Iteration 138 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:39,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1882138247, now seen corresponding path program 135 times [2018-07-25 08:56:39,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1081 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:39,660 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:39,660 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:56:39,660 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:56:39,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:56:39,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:56:39,661 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 49 states. [2018-07-25 08:56:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:39,739 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-07-25 08:56:39,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:56:39,739 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-25 08:56:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:39,739 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:56:39,739 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:56:39,740 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:56:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:56:39,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 08:56:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:56:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2018-07-25 08:56:39,789 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 96 [2018-07-25 08:56:39,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:39,789 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2018-07-25 08:56:39,789 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:56:39,789 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2018-07-25 08:56:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 08:56:39,790 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:39,790 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1] [2018-07-25 08:56:39,790 INFO L415 AbstractCegarLoop]: === Iteration 139 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:39,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1783318009, now seen corresponding path program 136 times [2018-07-25 08:56:39,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:39,936 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:39,936 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:56:39,936 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:56:39,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:56:39,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:56:39,937 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 49 states. [2018-07-25 08:56:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:40,265 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2018-07-25 08:56:40,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:56:40,265 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 97 [2018-07-25 08:56:40,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:40,266 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:56:40,266 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:56:40,266 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:56:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:56:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 100. [2018-07-25 08:56:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:56:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2018-07-25 08:56:40,318 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 97 [2018-07-25 08:56:40,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:40,319 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2018-07-25 08:56:40,319 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:56:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2018-07-25 08:56:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:56:40,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:40,319 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1] [2018-07-25 08:56:40,319 INFO L415 AbstractCegarLoop]: === Iteration 140 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:40,320 INFO L82 PathProgramCache]: Analyzing trace with hash 551655047, now seen corresponding path program 137 times [2018-07-25 08:56:40,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 1128 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:40,410 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:40,410 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:56:40,410 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:56:40,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:56:40,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:56:40,411 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 50 states. [2018-07-25 08:56:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:40,569 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2018-07-25 08:56:40,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:56:40,569 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:56:40,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:40,570 INFO L225 Difference]: With dead ends: 150 [2018-07-25 08:56:40,570 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:56:40,570 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:56:40,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:56:40,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:56:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:56:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 08:56:40,617 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 98 [2018-07-25 08:56:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:40,618 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 08:56:40,618 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:56:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 08:56:40,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:56:40,618 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:40,618 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1] [2018-07-25 08:56:40,618 INFO L415 AbstractCegarLoop]: === Iteration 141 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:40,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1407421011, now seen corresponding path program 138 times [2018-07-25 08:56:40,619 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 1128 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:40,724 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:40,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:56:40,725 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:56:40,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:56:40,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:56:40,725 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 50 states. [2018-07-25 08:56:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:40,825 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2018-07-25 08:56:40,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:56:40,826 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:56:40,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:40,826 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:56:40,826 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:56:40,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:56:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:56:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 08:56:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:56:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2018-07-25 08:56:40,878 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2018-07-25 08:56:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:40,879 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2018-07-25 08:56:40,879 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:56:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2018-07-25 08:56:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:56:40,879 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:40,879 INFO L354 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1] [2018-07-25 08:56:40,879 INFO L415 AbstractCegarLoop]: === Iteration 142 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:40,880 INFO L82 PathProgramCache]: Analyzing trace with hash -680439903, now seen corresponding path program 139 times [2018-07-25 08:56:40,880 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:41,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:41,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:56:41,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:56:41,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:56:41,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:56:41,096 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand 50 states. [2018-07-25 08:56:41,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:41,449 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2018-07-25 08:56:41,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:56:41,449 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 99 [2018-07-25 08:56:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:41,450 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:56:41,450 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:56:41,450 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:56:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:56:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 102. [2018-07-25 08:56:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:56:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2018-07-25 08:56:41,504 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 99 [2018-07-25 08:56:41,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:41,504 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2018-07-25 08:56:41,504 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:56:41,504 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2018-07-25 08:56:41,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:56:41,505 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:41,505 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1] [2018-07-25 08:56:41,505 INFO L415 AbstractCegarLoop]: === Iteration 143 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:41,505 INFO L82 PathProgramCache]: Analyzing trace with hash 381137965, now seen corresponding path program 140 times [2018-07-25 08:56:41,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 1176 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:41,603 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:41,603 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:56:41,603 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:56:41,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:56:41,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:56:41,604 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand 51 states. [2018-07-25 08:56:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:41,772 INFO L93 Difference]: Finished difference Result 153 states and 155 transitions. [2018-07-25 08:56:41,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:56:41,772 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-25 08:56:41,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:41,773 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:56:41,773 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:56:41,773 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:56:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:56:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:56:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:56:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-25 08:56:41,842 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 100 [2018-07-25 08:56:41,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:41,842 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-25 08:56:41,842 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:56:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-25 08:56:41,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:56:41,843 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:41,843 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1] [2018-07-25 08:56:41,843 INFO L415 AbstractCegarLoop]: === Iteration 144 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:41,844 INFO L82 PathProgramCache]: Analyzing trace with hash -220677689, now seen corresponding path program 141 times [2018-07-25 08:56:41,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 1176 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:41,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:41,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:56:41,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:56:41,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:56:41,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:56:41,961 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 51 states. [2018-07-25 08:56:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:42,058 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-07-25 08:56:42,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:56:42,059 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-25 08:56:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:42,059 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:56:42,059 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 08:56:42,060 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:56:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 08:56:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 08:56:42,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:56:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2018-07-25 08:56:42,135 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 100 [2018-07-25 08:56:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:42,135 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2018-07-25 08:56:42,135 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:56:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2018-07-25 08:56:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:56:42,136 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:42,136 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1] [2018-07-25 08:56:42,136 INFO L415 AbstractCegarLoop]: === Iteration 145 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:42,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1748864711, now seen corresponding path program 142 times [2018-07-25 08:56:42,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:42,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:42,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:56:42,323 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:56:42,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:56:42,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:56:42,323 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 51 states. [2018-07-25 08:56:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:42,681 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2018-07-25 08:56:42,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:56:42,681 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 101 [2018-07-25 08:56:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:42,682 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:56:42,682 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:56:42,682 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:56:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:56:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 104. [2018-07-25 08:56:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:56:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2018-07-25 08:56:42,730 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 101 [2018-07-25 08:56:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:42,730 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2018-07-25 08:56:42,730 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:56:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2018-07-25 08:56:42,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:56:42,731 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:42,731 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1] [2018-07-25 08:56:42,731 INFO L415 AbstractCegarLoop]: === Iteration 146 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:42,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1619830329, now seen corresponding path program 143 times [2018-07-25 08:56:42,731 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 1225 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:42,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:42,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:56:42,829 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:56:42,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:56:42,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:56:42,829 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 52 states. [2018-07-25 08:56:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:42,979 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2018-07-25 08:56:42,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:56:42,979 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:56:42,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:42,979 INFO L225 Difference]: With dead ends: 156 [2018-07-25 08:56:42,979 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:56:42,980 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:56:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:56:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:56:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:56:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 08:56:43,036 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 102 [2018-07-25 08:56:43,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:43,037 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 08:56:43,037 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:56:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 08:56:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:56:43,037 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:43,037 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1] [2018-07-25 08:56:43,037 INFO L415 AbstractCegarLoop]: === Iteration 147 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:43,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1198720877, now seen corresponding path program 144 times [2018-07-25 08:56:43,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 1225 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:43,128 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:43,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:56:43,128 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:56:43,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:56:43,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:56:43,129 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 52 states. [2018-07-25 08:56:43,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:43,189 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2018-07-25 08:56:43,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:56:43,189 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:56:43,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:43,189 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:56:43,189 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:56:43,190 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:56:43,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:56:43,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 08:56:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:56:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2018-07-25 08:56:43,236 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 102 [2018-07-25 08:56:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:43,237 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2018-07-25 08:56:43,237 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:56:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2018-07-25 08:56:43,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 08:56:43,237 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:43,237 INFO L354 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1] [2018-07-25 08:56:43,237 INFO L415 AbstractCegarLoop]: === Iteration 148 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:43,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1494419999, now seen corresponding path program 145 times [2018-07-25 08:56:43,237 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:43,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:43,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:56:43,390 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:56:43,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:56:43,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:56:43,391 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand 52 states. [2018-07-25 08:56:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:43,737 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2018-07-25 08:56:43,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:56:43,737 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 103 [2018-07-25 08:56:43,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:43,738 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:56:43,738 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:56:43,739 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:56:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:56:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 106. [2018-07-25 08:56:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:56:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2018-07-25 08:56:43,794 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 103 [2018-07-25 08:56:43,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:43,794 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2018-07-25 08:56:43,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:56:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2018-07-25 08:56:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:56:43,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:43,795 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1] [2018-07-25 08:56:43,795 INFO L415 AbstractCegarLoop]: === Iteration 149 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:43,796 INFO L82 PathProgramCache]: Analyzing trace with hash 917558765, now seen corresponding path program 146 times [2018-07-25 08:56:43,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 1275 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:43,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:43,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:56:43,906 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:56:43,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:56:43,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:56:43,907 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 53 states. [2018-07-25 08:56:44,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:44,071 INFO L93 Difference]: Finished difference Result 159 states and 161 transitions. [2018-07-25 08:56:44,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:56:44,072 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-25 08:56:44,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:44,072 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:56:44,072 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:56:44,073 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:56:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:56:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:56:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:56:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 08:56:44,121 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 104 [2018-07-25 08:56:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:44,121 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 08:56:44,121 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:56:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 08:56:44,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:56:44,122 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:44,122 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1] [2018-07-25 08:56:44,122 INFO L415 AbstractCegarLoop]: === Iteration 150 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:44,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1901667065, now seen corresponding path program 147 times [2018-07-25 08:56:44,122 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 1275 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:44,229 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:44,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:56:44,229 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:56:44,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:56:44,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:56:44,230 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 53 states. [2018-07-25 08:56:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:44,297 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-07-25 08:56:44,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:56:44,297 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-25 08:56:44,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:44,298 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:56:44,298 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:56:44,298 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:56:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:56:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 08:56:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:56:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2018-07-25 08:56:44,347 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 104 [2018-07-25 08:56:44,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:44,347 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2018-07-25 08:56:44,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:56:44,347 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2018-07-25 08:56:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:56:44,347 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:44,347 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1] [2018-07-25 08:56:44,348 INFO L415 AbstractCegarLoop]: === Iteration 151 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:44,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1177801607, now seen corresponding path program 148 times [2018-07-25 08:56:44,348 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:44,507 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:44,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:56:44,508 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:56:44,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:56:44,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:56:44,508 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 53 states. [2018-07-25 08:56:44,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:44,928 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2018-07-25 08:56:44,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:56:44,929 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 105 [2018-07-25 08:56:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:44,929 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:56:44,929 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:56:44,930 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:56:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:56:45,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 108. [2018-07-25 08:56:45,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:56:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2018-07-25 08:56:45,002 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 105 [2018-07-25 08:56:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:45,002 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2018-07-25 08:56:45,003 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:56:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2018-07-25 08:56:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:56:45,003 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:45,003 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1, 1, 1] [2018-07-25 08:56:45,003 INFO L415 AbstractCegarLoop]: === Iteration 152 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:45,003 INFO L82 PathProgramCache]: Analyzing trace with hash -2142917369, now seen corresponding path program 149 times [2018-07-25 08:56:45,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 1326 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:45,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:45,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:56:45,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:56:45,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:56:45,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:56:45,174 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 54 states. [2018-07-25 08:56:45,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:45,341 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2018-07-25 08:56:45,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:56:45,341 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:56:45,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:45,341 INFO L225 Difference]: With dead ends: 162 [2018-07-25 08:56:45,341 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:56:45,342 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:56:45,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:56:45,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:56:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:56:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-25 08:56:45,391 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 106 [2018-07-25 08:56:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:45,391 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-25 08:56:45,391 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:56:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-25 08:56:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:56:45,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:45,392 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1, 1, 1] [2018-07-25 08:56:45,392 INFO L415 AbstractCegarLoop]: === Iteration 153 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:45,392 INFO L82 PathProgramCache]: Analyzing trace with hash 655395117, now seen corresponding path program 150 times [2018-07-25 08:56:45,392 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 1326 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:45,490 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:45,490 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:56:45,490 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:56:45,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:56:45,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:56:45,491 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 54 states. [2018-07-25 08:56:45,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:45,567 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2018-07-25 08:56:45,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:56:45,567 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:56:45,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:45,567 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:56:45,567 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 08:56:45,568 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:56:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 08:56:45,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 08:56:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:56:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2018-07-25 08:56:45,649 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 106 [2018-07-25 08:56:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:45,650 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2018-07-25 08:56:45,650 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:56:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2018-07-25 08:56:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:56:45,650 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:45,650 INFO L354 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1] [2018-07-25 08:56:45,651 INFO L415 AbstractCegarLoop]: === Iteration 154 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:45,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1157649375, now seen corresponding path program 151 times [2018-07-25 08:56:45,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:45,844 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:45,844 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:56:45,844 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:56:45,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:56:45,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:56:45,845 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 54 states. [2018-07-25 08:56:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:46,259 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2018-07-25 08:56:46,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:56:46,259 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 107 [2018-07-25 08:56:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:46,260 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:56:46,260 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:56:46,260 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:56:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:56:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 110. [2018-07-25 08:56:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:56:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2018-07-25 08:56:46,326 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 107 [2018-07-25 08:56:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:46,327 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2018-07-25 08:56:46,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:56:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2018-07-25 08:56:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:56:46,327 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:46,327 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1] [2018-07-25 08:56:46,327 INFO L415 AbstractCegarLoop]: === Iteration 155 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1527453779, now seen corresponding path program 152 times [2018-07-25 08:56:46,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1378 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:46,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:46,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:56:46,440 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:56:46,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:56:46,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:56:46,441 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 55 states. [2018-07-25 08:56:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:46,642 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2018-07-25 08:56:46,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:56:46,642 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-25 08:56:46,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:46,643 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:56:46,643 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:56:46,643 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:56:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:56:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:56:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:56:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 08:56:46,702 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 108 [2018-07-25 08:56:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:46,703 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 08:56:46,703 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:56:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 08:56:46,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:56:46,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:46,703 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1] [2018-07-25 08:56:46,703 INFO L415 AbstractCegarLoop]: === Iteration 156 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:46,703 INFO L82 PathProgramCache]: Analyzing trace with hash -679112633, now seen corresponding path program 153 times [2018-07-25 08:56:46,704 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1378 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:46,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:46,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:56:46,829 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:56:46,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:56:46,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:56:46,830 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 55 states. [2018-07-25 08:56:46,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:46,908 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2018-07-25 08:56:46,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:56:46,908 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-25 08:56:46,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:46,908 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:56:46,908 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:56:46,909 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:56:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:56:46,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 08:56:46,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:56:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2018-07-25 08:56:46,967 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 108 [2018-07-25 08:56:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:46,967 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2018-07-25 08:56:46,968 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:56:46,968 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2018-07-25 08:56:46,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 08:56:46,968 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:46,968 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1] [2018-07-25 08:56:46,968 INFO L415 AbstractCegarLoop]: === Iteration 157 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:46,968 INFO L82 PathProgramCache]: Analyzing trace with hash 422283335, now seen corresponding path program 154 times [2018-07-25 08:56:46,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:47,201 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:47,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:56:47,202 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:56:47,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:56:47,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:56:47,202 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 55 states. [2018-07-25 08:56:47,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:47,628 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2018-07-25 08:56:47,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:56:47,629 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 109 [2018-07-25 08:56:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:47,629 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:56:47,629 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:56:47,629 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:56:47,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:56:47,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 112. [2018-07-25 08:56:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:56:47,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2018-07-25 08:56:47,693 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 109 [2018-07-25 08:56:47,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:47,693 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2018-07-25 08:56:47,693 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:56:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2018-07-25 08:56:47,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:56:47,693 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:47,693 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1, 1, 1] [2018-07-25 08:56:47,693 INFO L415 AbstractCegarLoop]: === Iteration 158 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:47,694 INFO L82 PathProgramCache]: Analyzing trace with hash 205819975, now seen corresponding path program 155 times [2018-07-25 08:56:47,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 1431 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:47,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:47,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:56:47,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:56:47,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:56:47,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:56:47,812 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 56 states. [2018-07-25 08:56:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:47,982 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2018-07-25 08:56:47,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:56:47,983 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:56:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:47,983 INFO L225 Difference]: With dead ends: 168 [2018-07-25 08:56:47,983 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:56:47,983 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:56:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:56:48,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:56:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:56:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 08:56:48,044 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 110 [2018-07-25 08:56:48,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:48,044 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 08:56:48,044 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:56:48,044 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 08:56:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:56:48,044 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:48,044 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1, 1, 1] [2018-07-25 08:56:48,045 INFO L415 AbstractCegarLoop]: === Iteration 159 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash 734591725, now seen corresponding path program 156 times [2018-07-25 08:56:48,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 1431 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:48,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:48,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:56:48,189 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:56:48,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:56:48,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:56:48,190 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 56 states. [2018-07-25 08:56:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:48,273 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2018-07-25 08:56:48,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:56:48,273 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:56:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:48,273 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:56:48,273 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:56:48,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:56:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:56:48,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 08:56:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:56:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2018-07-25 08:56:48,334 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2018-07-25 08:56:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:48,334 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2018-07-25 08:56:48,334 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:56:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2018-07-25 08:56:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:56:48,335 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:48,335 INFO L354 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1] [2018-07-25 08:56:48,335 INFO L415 AbstractCegarLoop]: === Iteration 160 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:48,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1297445473, now seen corresponding path program 157 times [2018-07-25 08:56:48,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:48,531 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:48,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:56:48,531 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:56:48,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:56:48,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:56:48,532 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 56 states. [2018-07-25 08:56:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:48,966 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2018-07-25 08:56:48,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:56:48,966 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 111 [2018-07-25 08:56:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:48,966 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:56:48,966 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:56:48,967 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:56:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:56:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 114. [2018-07-25 08:56:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:56:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2018-07-25 08:56:49,033 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 111 [2018-07-25 08:56:49,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:49,033 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2018-07-25 08:56:49,033 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:56:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2018-07-25 08:56:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:56:49,033 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:49,034 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1, 1, 1] [2018-07-25 08:56:49,034 INFO L415 AbstractCegarLoop]: === Iteration 161 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:49,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1566042477, now seen corresponding path program 158 times [2018-07-25 08:56:49,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 1485 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:49,187 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:49,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:56:49,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:56:49,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:56:49,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:56:49,188 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 57 states. [2018-07-25 08:56:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:49,409 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2018-07-25 08:56:49,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:56:49,409 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-25 08:56:49,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:49,409 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:56:49,409 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:56:49,410 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:56:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:56:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:56:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:56:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-25 08:56:49,472 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 112 [2018-07-25 08:56:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:49,473 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-25 08:56:49,473 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:56:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-25 08:56:49,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:56:49,473 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:49,474 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1, 1, 1] [2018-07-25 08:56:49,474 INFO L415 AbstractCegarLoop]: === Iteration 162 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:49,474 INFO L82 PathProgramCache]: Analyzing trace with hash 778097543, now seen corresponding path program 159 times [2018-07-25 08:56:49,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 1485 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:49,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:49,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:56:49,649 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:56:49,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:56:49,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:56:49,650 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 57 states. [2018-07-25 08:56:49,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:49,744 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-07-25 08:56:49,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:56:49,744 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-25 08:56:49,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:49,744 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:56:49,745 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 08:56:49,745 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:56:49,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 08:56:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 08:56:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:56:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2018-07-25 08:56:49,808 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 112 [2018-07-25 08:56:49,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:49,809 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2018-07-25 08:56:49,809 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:56:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2018-07-25 08:56:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:56:49,809 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:49,809 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1] [2018-07-25 08:56:49,809 INFO L415 AbstractCegarLoop]: === Iteration 163 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:49,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1648841465, now seen corresponding path program 160 times [2018-07-25 08:56:49,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:50,026 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:50,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:56:50,026 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:56:50,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:56:50,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:56:50,027 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 57 states. [2018-07-25 08:56:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:50,508 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2018-07-25 08:56:50,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:56:50,508 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 113 [2018-07-25 08:56:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:50,508 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:56:50,508 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:56:50,509 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:56:50,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:56:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 116. [2018-07-25 08:56:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:56:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2018-07-25 08:56:50,577 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 113 [2018-07-25 08:56:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:50,577 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2018-07-25 08:56:50,577 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:56:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2018-07-25 08:56:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:56:50,578 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:50,578 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1, 1, 1] [2018-07-25 08:56:50,578 INFO L415 AbstractCegarLoop]: === Iteration 164 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:50,578 INFO L82 PathProgramCache]: Analyzing trace with hash 425460615, now seen corresponding path program 161 times [2018-07-25 08:56:50,578 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 1540 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:50,710 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:50,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:56:50,710 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:56:50,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:56:50,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:56:50,711 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 58 states. [2018-07-25 08:56:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:50,943 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2018-07-25 08:56:50,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:56:50,943 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:56:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:50,944 INFO L225 Difference]: With dead ends: 174 [2018-07-25 08:56:50,944 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:56:50,946 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:56:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:56:51,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:56:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:56:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 08:56:51,011 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 114 [2018-07-25 08:56:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:51,011 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 08:56:51,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:56:51,012 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 08:56:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:56:51,012 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:51,012 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1, 1, 1] [2018-07-25 08:56:51,012 INFO L415 AbstractCegarLoop]: === Iteration 165 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:51,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1768971437, now seen corresponding path program 162 times [2018-07-25 08:56:51,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 1540 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:51,196 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:51,196 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:56:51,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:56:51,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:56:51,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:56:51,197 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 58 states. [2018-07-25 08:56:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:51,299 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2018-07-25 08:56:51,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:56:51,299 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:56:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:51,299 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:56:51,299 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:56:51,300 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:56:51,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:56:51,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 08:56:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:56:51,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2018-07-25 08:56:51,381 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 114 [2018-07-25 08:56:51,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:51,382 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2018-07-25 08:56:51,382 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:56:51,382 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2018-07-25 08:56:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 08:56:51,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:51,382 INFO L354 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1] [2018-07-25 08:56:51,382 INFO L415 AbstractCegarLoop]: === Iteration 166 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:51,383 INFO L82 PathProgramCache]: Analyzing trace with hash -996521823, now seen corresponding path program 163 times [2018-07-25 08:56:51,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:51,614 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:51,614 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:56:51,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:56:51,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:56:51,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:56:51,615 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 58 states. [2018-07-25 08:56:52,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:52,064 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2018-07-25 08:56:52,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:56:52,064 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 115 [2018-07-25 08:56:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:52,065 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:56:52,065 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:56:52,065 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:56:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:56:52,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 118. [2018-07-25 08:56:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:56:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2018-07-25 08:56:52,135 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 115 [2018-07-25 08:56:52,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:52,136 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2018-07-25 08:56:52,136 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:56:52,136 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2018-07-25 08:56:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:56:52,136 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:52,136 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1, 1, 1] [2018-07-25 08:56:52,136 INFO L415 AbstractCegarLoop]: === Iteration 167 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:52,136 INFO L82 PathProgramCache]: Analyzing trace with hash -827466963, now seen corresponding path program 164 times [2018-07-25 08:56:52,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1596 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:52,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:52,269 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:56:52,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:56:52,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:56:52,270 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:56:52,270 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 59 states. [2018-07-25 08:56:52,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:52,510 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2018-07-25 08:56:52,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:56:52,511 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-25 08:56:52,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:52,511 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:56:52,511 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:56:52,511 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:56:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:56:52,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:56:52,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:56:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 08:56:52,593 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 116 [2018-07-25 08:56:52,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:52,594 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 08:56:52,594 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:56:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 08:56:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:56:52,594 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:52,594 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1, 1, 1] [2018-07-25 08:56:52,594 INFO L415 AbstractCegarLoop]: === Iteration 168 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:52,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2128304441, now seen corresponding path program 165 times [2018-07-25 08:56:52,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1596 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:52,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:52,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:56:52,728 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:56:52,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:56:52,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:56:52,728 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 59 states. [2018-07-25 08:56:52,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:52,818 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-07-25 08:56:52,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:56:52,818 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-25 08:56:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:52,819 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:56:52,819 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:56:52,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:56:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:56:52,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 08:56:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:56:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2018-07-25 08:56:52,887 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 116 [2018-07-25 08:56:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:52,887 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2018-07-25 08:56:52,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:56:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2018-07-25 08:56:52,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:56:52,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:52,887 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1] [2018-07-25 08:56:52,888 INFO L415 AbstractCegarLoop]: === Iteration 169 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:52,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1552989753, now seen corresponding path program 166 times [2018-07-25 08:56:52,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:53,110 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:53,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:56:53,110 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:56:53,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:56:53,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:56:53,111 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 59 states. [2018-07-25 08:56:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:53,599 INFO L93 Difference]: Finished difference Result 179 states and 181 transitions. [2018-07-25 08:56:53,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:56:53,599 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 117 [2018-07-25 08:56:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:53,600 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:56:53,600 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:56:53,600 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:56:53,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:56:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 120. [2018-07-25 08:56:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:56:53,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2018-07-25 08:56:53,673 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 117 [2018-07-25 08:56:53,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:53,673 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2018-07-25 08:56:53,673 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:56:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2018-07-25 08:56:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:56:53,674 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:53,674 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1, 1, 1] [2018-07-25 08:56:53,674 INFO L415 AbstractCegarLoop]: === Iteration 170 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:53,674 INFO L82 PathProgramCache]: Analyzing trace with hash -898103609, now seen corresponding path program 167 times [2018-07-25 08:56:53,674 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1653 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:53,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:53,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:56:53,809 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:56:53,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:56:53,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:56:53,810 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 60 states. [2018-07-25 08:56:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:54,026 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2018-07-25 08:56:54,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:56:54,026 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:56:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:54,026 INFO L225 Difference]: With dead ends: 180 [2018-07-25 08:56:54,026 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:56:54,027 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:56:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:56:54,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:56:54,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:56:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-25 08:56:54,096 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 118 [2018-07-25 08:56:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:54,096 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-25 08:56:54,097 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:56:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-25 08:56:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:56:54,097 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:54,097 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1, 1, 1] [2018-07-25 08:56:54,097 INFO L415 AbstractCegarLoop]: === Iteration 171 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:54,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1725607533, now seen corresponding path program 168 times [2018-07-25 08:56:54,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1653 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:54,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:54,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:56:54,241 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:56:54,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:56:54,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:56:54,242 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 60 states. [2018-07-25 08:56:54,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:54,332 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2018-07-25 08:56:54,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:56:54,332 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:56:54,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:54,333 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:56:54,333 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:56:54,333 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:56:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:56:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 08:56:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:56:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2018-07-25 08:56:54,404 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 118 [2018-07-25 08:56:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:54,404 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2018-07-25 08:56:54,404 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:56:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2018-07-25 08:56:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:56:54,405 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:54,405 INFO L354 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1] [2018-07-25 08:56:54,405 INFO L415 AbstractCegarLoop]: === Iteration 172 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:54,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1954164449, now seen corresponding path program 169 times [2018-07-25 08:56:54,405 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:54,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:54,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:56:54,662 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:56:54,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:56:54,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:56:54,663 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand 60 states. [2018-07-25 08:56:55,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:55,166 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-07-25 08:56:55,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:56:55,166 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 119 [2018-07-25 08:56:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:55,166 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:56:55,167 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:56:55,167 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:56:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:56:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 122. [2018-07-25 08:56:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:56:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2018-07-25 08:56:55,244 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 119 [2018-07-25 08:56:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:55,244 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2018-07-25 08:56:55,244 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:56:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2018-07-25 08:56:55,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:56:55,245 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:55,245 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1, 1, 1] [2018-07-25 08:56:55,245 INFO L415 AbstractCegarLoop]: === Iteration 173 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash 449494253, now seen corresponding path program 170 times [2018-07-25 08:56:55,245 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 1711 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:55,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:55,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:56:55,390 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:56:55,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:56:55,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:56:55,391 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 61 states. [2018-07-25 08:56:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:55,658 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2018-07-25 08:56:55,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:56:55,658 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-25 08:56:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:55,659 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:56:55,659 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:56:55,659 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:56:55,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:56:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:56:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:56:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 08:56:55,734 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 120 [2018-07-25 08:56:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:55,734 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 08:56:55,734 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:56:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 08:56:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:56:55,735 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:55,735 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1, 1, 1] [2018-07-25 08:56:55,735 INFO L415 AbstractCegarLoop]: === Iteration 174 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:55,735 INFO L82 PathProgramCache]: Analyzing trace with hash 180161031, now seen corresponding path program 171 times [2018-07-25 08:56:55,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 1711 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:55,893 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:55,893 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:56:55,893 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:56:55,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:56:55,894 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:56:55,894 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 61 states. [2018-07-25 08:56:56,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:56,009 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-07-25 08:56:56,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:56:56,009 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-25 08:56:56,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:56,010 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:56:56,010 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:56:56,010 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:56:56,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:56:56,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 08:56:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:56:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2018-07-25 08:56:56,083 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 120 [2018-07-25 08:56:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:56,083 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2018-07-25 08:56:56,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:56:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2018-07-25 08:56:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 08:56:56,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:56,084 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1] [2018-07-25 08:56:56,084 INFO L415 AbstractCegarLoop]: === Iteration 175 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:56,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1289963143, now seen corresponding path program 172 times [2018-07-25 08:56:56,085 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:56,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:56,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:56:56,324 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:56:56,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:56:56,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:56:56,325 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 61 states. [2018-07-25 08:56:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:56,855 INFO L93 Difference]: Finished difference Result 185 states and 187 transitions. [2018-07-25 08:56:56,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:56:56,855 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 121 [2018-07-25 08:56:56,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:56,856 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:56:56,856 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:56:56,856 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:56:56,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:56:56,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 124. [2018-07-25 08:56:56,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:56:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2018-07-25 08:56:56,950 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 121 [2018-07-25 08:56:56,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:56,951 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2018-07-25 08:56:56,951 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:56:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2018-07-25 08:56:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:56:56,951 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:56,951 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1, 1, 1] [2018-07-25 08:56:56,952 INFO L415 AbstractCegarLoop]: === Iteration 176 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:56,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1334090247, now seen corresponding path program 173 times [2018-07-25 08:56:56,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1770 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:57,114 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:57,114 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:56:57,114 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:56:57,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:56:57,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:56:57,115 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 62 states. [2018-07-25 08:56:57,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:57,375 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2018-07-25 08:56:57,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:56:57,375 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:56:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:57,376 INFO L225 Difference]: With dead ends: 186 [2018-07-25 08:56:57,376 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:56:57,376 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:56:57,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:56:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:56:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:56:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 08:56:57,458 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 122 [2018-07-25 08:56:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:57,458 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 08:56:57,458 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:56:57,458 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 08:56:57,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:56:57,459 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:57,459 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1, 1, 1] [2018-07-25 08:56:57,459 INFO L415 AbstractCegarLoop]: === Iteration 177 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1574694957, now seen corresponding path program 174 times [2018-07-25 08:56:57,459 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1770 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:57,633 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:57,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:56:57,634 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:56:57,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:56:57,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:56:57,635 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 62 states. [2018-07-25 08:56:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:57,748 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2018-07-25 08:56:57,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:56:57,748 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:56:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:57,749 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:56:57,749 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:56:57,749 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:56:57,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:56:57,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 08:56:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:56:57,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2018-07-25 08:56:57,831 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2018-07-25 08:56:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:57,831 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2018-07-25 08:56:57,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:56:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2018-07-25 08:56:57,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:56:57,832 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:57,832 INFO L354 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1] [2018-07-25 08:56:57,833 INFO L415 AbstractCegarLoop]: === Iteration 178 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:57,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1570841889, now seen corresponding path program 175 times [2018-07-25 08:56:57,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:58,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:58,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:56:58,192 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:56:58,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:56:58,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:56:58,193 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 62 states. [2018-07-25 08:56:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:58,785 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2018-07-25 08:56:58,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:56:58,786 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 123 [2018-07-25 08:56:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:58,786 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:56:58,786 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:56:58,787 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:56:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:56:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 126. [2018-07-25 08:56:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:56:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2018-07-25 08:56:58,869 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 123 [2018-07-25 08:56:58,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:58,869 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2018-07-25 08:56:58,869 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:56:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2018-07-25 08:56:58,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:56:58,869 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:58,870 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1, 1, 1] [2018-07-25 08:56:58,870 INFO L415 AbstractCegarLoop]: === Iteration 179 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:58,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1451396781, now seen corresponding path program 176 times [2018-07-25 08:56:58,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1830 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:59,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:59,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:56:59,024 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:56:59,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:56:59,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:56:59,025 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 63 states. [2018-07-25 08:56:59,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:59,299 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2018-07-25 08:56:59,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:56:59,300 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-25 08:56:59,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:59,300 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:56:59,300 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:56:59,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:56:59,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:56:59,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:56:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:56:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-25 08:56:59,377 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 124 [2018-07-25 08:56:59,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:59,378 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-25 08:56:59,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:56:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-25 08:56:59,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:56:59,378 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:59,378 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1, 1, 1] [2018-07-25 08:56:59,378 INFO L415 AbstractCegarLoop]: === Iteration 180 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:59,378 INFO L82 PathProgramCache]: Analyzing trace with hash 320208199, now seen corresponding path program 177 times [2018-07-25 08:56:59,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1830 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:59,534 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:59,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:56:59,534 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:56:59,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:56:59,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:56:59,535 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 63 states. [2018-07-25 08:56:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:59,632 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-07-25 08:56:59,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:56:59,632 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-25 08:56:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:59,632 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:56:59,633 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 08:56:59,633 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:56:59,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 08:56:59,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 08:56:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:56:59,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2018-07-25 08:56:59,709 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 124 [2018-07-25 08:56:59,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:59,709 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2018-07-25 08:56:59,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:56:59,710 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2018-07-25 08:56:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:56:59,710 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:59,710 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1] [2018-07-25 08:56:59,710 INFO L415 AbstractCegarLoop]: === Iteration 181 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:59,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1336458055, now seen corresponding path program 178 times [2018-07-25 08:56:59,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:59,955 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:59,955 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:56:59,956 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:56:59,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:56:59,956 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:56:59,956 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 63 states. [2018-07-25 08:57:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:00,501 INFO L93 Difference]: Finished difference Result 191 states and 193 transitions. [2018-07-25 08:57:00,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:57:00,501 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 125 [2018-07-25 08:57:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:00,502 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:57:00,502 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:57:00,502 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:57:00,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:57:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 128. [2018-07-25 08:57:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:57:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2018-07-25 08:57:00,586 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 125 [2018-07-25 08:57:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:00,586 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2018-07-25 08:57:00,586 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:57:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2018-07-25 08:57:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:57:00,587 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:00,587 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1, 1, 1] [2018-07-25 08:57:00,587 INFO L415 AbstractCegarLoop]: === Iteration 182 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:00,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1519534777, now seen corresponding path program 179 times [2018-07-25 08:57:00,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1891 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:00,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:00,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:57:00,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:57:00,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:57:00,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:57:00,751 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 64 states. [2018-07-25 08:57:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:00,998 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2018-07-25 08:57:00,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:57:00,998 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:57:00,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:00,999 INFO L225 Difference]: With dead ends: 192 [2018-07-25 08:57:00,999 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:57:00,999 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:57:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:57:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:57:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:57:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 08:57:01,079 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 126 [2018-07-25 08:57:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:01,079 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 08:57:01,079 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:57:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 08:57:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:57:01,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:01,080 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1, 1, 1] [2018-07-25 08:57:01,080 INFO L415 AbstractCegarLoop]: === Iteration 183 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:01,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2068324845, now seen corresponding path program 180 times [2018-07-25 08:57:01,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1891 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:01,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:01,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:57:01,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:57:01,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:57:01,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:57:01,258 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 64 states. [2018-07-25 08:57:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:01,378 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2018-07-25 08:57:01,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:57:01,378 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:57:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:01,378 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:57:01,378 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:57:01,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:57:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:57:01,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 08:57:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:57:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2018-07-25 08:57:01,486 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 126 [2018-07-25 08:57:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:01,486 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2018-07-25 08:57:01,487 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:57:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2018-07-25 08:57:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 08:57:01,487 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:01,487 INFO L354 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1] [2018-07-25 08:57:01,488 INFO L415 AbstractCegarLoop]: === Iteration 184 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:01,488 INFO L82 PathProgramCache]: Analyzing trace with hash -306500767, now seen corresponding path program 181 times [2018-07-25 08:57:01,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:01,744 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:01,744 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:57:01,744 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:57:01,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:57:01,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:57:01,745 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 64 states. [2018-07-25 08:57:02,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:02,350 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2018-07-25 08:57:02,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:57:02,350 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 127 [2018-07-25 08:57:02,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:02,351 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:57:02,351 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:57:02,351 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:57:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:57:02,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 130. [2018-07-25 08:57:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:57:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2018-07-25 08:57:02,458 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 127 [2018-07-25 08:57:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:02,458 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2018-07-25 08:57:02,458 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:57:02,458 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2018-07-25 08:57:02,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:57:02,459 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:02,459 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1, 1, 1] [2018-07-25 08:57:02,459 INFO L415 AbstractCegarLoop]: === Iteration 185 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:02,459 INFO L82 PathProgramCache]: Analyzing trace with hash -911650707, now seen corresponding path program 182 times [2018-07-25 08:57:02,460 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 1953 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:02,636 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:02,636 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:57:02,636 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:57:02,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:57:02,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:57:02,637 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 65 states. [2018-07-25 08:57:02,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:02,924 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions. [2018-07-25 08:57:02,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:57:02,924 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-25 08:57:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:02,924 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:57:02,924 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:57:02,925 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:57:02,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:57:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:57:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:57:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 08:57:03,006 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 128 [2018-07-25 08:57:03,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:03,007 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 08:57:03,007 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:57:03,007 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 08:57:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:57:03,007 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:03,007 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1, 1, 1] [2018-07-25 08:57:03,008 INFO L415 AbstractCegarLoop]: === Iteration 186 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:03,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1357152121, now seen corresponding path program 183 times [2018-07-25 08:57:03,008 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 1953 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:03,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:03,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:57:03,195 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:57:03,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:57:03,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:57:03,195 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 65 states. [2018-07-25 08:57:03,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:03,302 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-07-25 08:57:03,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:57:03,302 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-25 08:57:03,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:03,303 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:57:03,303 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:57:03,304 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:57:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:57:03,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 08:57:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:57:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2018-07-25 08:57:03,386 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 128 [2018-07-25 08:57:03,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:03,386 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2018-07-25 08:57:03,386 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:57:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2018-07-25 08:57:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:57:03,387 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:03,387 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1] [2018-07-25 08:57:03,387 INFO L415 AbstractCegarLoop]: === Iteration 187 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:03,387 INFO L82 PathProgramCache]: Analyzing trace with hash 877895687, now seen corresponding path program 184 times [2018-07-25 08:57:03,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:03,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:03,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:57:03,662 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:57:03,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:57:03,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:57:03,663 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 65 states. [2018-07-25 08:57:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:04,244 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2018-07-25 08:57:04,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:57:04,244 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 129 [2018-07-25 08:57:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:04,245 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:57:04,245 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:57:04,245 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:57:04,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:57:04,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 132. [2018-07-25 08:57:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:57:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2018-07-25 08:57:04,340 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 129 [2018-07-25 08:57:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:04,341 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2018-07-25 08:57:04,341 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:57:04,341 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2018-07-25 08:57:04,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:57:04,341 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:04,341 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1, 1, 1] [2018-07-25 08:57:04,341 INFO L415 AbstractCegarLoop]: === Iteration 188 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:04,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1444900999, now seen corresponding path program 185 times [2018-07-25 08:57:04,342 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 2016 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:04,524 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:04,524 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:57:04,524 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:57:04,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:57:04,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:57:04,525 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand 66 states. [2018-07-25 08:57:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:04,765 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2018-07-25 08:57:04,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:57:04,765 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:57:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:04,766 INFO L225 Difference]: With dead ends: 198 [2018-07-25 08:57:04,766 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:57:04,766 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:57:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:57:04,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:57:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:57:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-25 08:57:04,850 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 130 [2018-07-25 08:57:04,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:04,850 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-25 08:57:04,850 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:57:04,850 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-25 08:57:04,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:57:04,851 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:04,851 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1, 1, 1] [2018-07-25 08:57:04,851 INFO L415 AbstractCegarLoop]: === Iteration 189 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:04,851 INFO L82 PathProgramCache]: Analyzing trace with hash 519259053, now seen corresponding path program 186 times [2018-07-25 08:57:04,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 2016 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:05,026 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:05,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:57:05,026 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:57:05,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:57:05,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:57:05,027 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 66 states. [2018-07-25 08:57:05,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:05,136 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2018-07-25 08:57:05,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:57:05,136 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:57:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:05,136 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:57:05,136 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 08:57:05,137 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:57:05,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 08:57:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 08:57:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:57:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2018-07-25 08:57:05,221 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 130 [2018-07-25 08:57:05,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:05,221 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2018-07-25 08:57:05,221 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:57:05,222 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2018-07-25 08:57:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:57:05,222 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:05,222 INFO L354 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1] [2018-07-25 08:57:05,222 INFO L415 AbstractCegarLoop]: === Iteration 190 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1082900063, now seen corresponding path program 187 times [2018-07-25 08:57:05,222 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:05,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:05,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:57:05,534 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:57:05,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:57:05,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:57:05,535 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand 66 states. [2018-07-25 08:57:06,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:06,245 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2018-07-25 08:57:06,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:57:06,246 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 131 [2018-07-25 08:57:06,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:06,246 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:57:06,246 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:57:06,247 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:57:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:57:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 134. [2018-07-25 08:57:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:57:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2018-07-25 08:57:06,342 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 131 [2018-07-25 08:57:06,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:06,342 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2018-07-25 08:57:06,342 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:57:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2018-07-25 08:57:06,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:57:06,343 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:06,343 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1] [2018-07-25 08:57:06,343 INFO L415 AbstractCegarLoop]: === Iteration 191 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:06,343 INFO L82 PathProgramCache]: Analyzing trace with hash 789774893, now seen corresponding path program 188 times [2018-07-25 08:57:06,343 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 2080 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:06,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:06,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:57:06,550 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:57:06,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:57:06,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:57:06,551 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand 67 states. [2018-07-25 08:57:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:06,782 INFO L93 Difference]: Finished difference Result 201 states and 203 transitions. [2018-07-25 08:57:06,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:57:06,782 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-25 08:57:06,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:06,783 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:57:06,783 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:57:06,783 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:57:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:57:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:57:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:57:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 08:57:06,871 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 132 [2018-07-25 08:57:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:06,871 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 08:57:06,871 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:57:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 08:57:06,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:57:06,871 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:06,871 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1] [2018-07-25 08:57:06,872 INFO L415 AbstractCegarLoop]: === Iteration 192 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:06,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2135321657, now seen corresponding path program 189 times [2018-07-25 08:57:06,872 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 2080 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:07,034 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:07,034 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:57:07,034 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:57:07,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:57:07,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:57:07,035 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 67 states. [2018-07-25 08:57:07,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:07,137 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2018-07-25 08:57:07,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:57:07,137 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-25 08:57:07,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:07,137 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:57:07,137 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:57:07,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:57:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:57:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 08:57:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:57:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2018-07-25 08:57:07,219 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 132 [2018-07-25 08:57:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:07,219 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2018-07-25 08:57:07,220 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:57:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2018-07-25 08:57:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 08:57:07,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:07,220 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1] [2018-07-25 08:57:07,221 INFO L415 AbstractCegarLoop]: === Iteration 193 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:07,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1770523449, now seen corresponding path program 190 times [2018-07-25 08:57:07,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:07,463 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:07,463 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:57:07,463 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:57:07,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:57:07,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:57:07,464 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 67 states. [2018-07-25 08:57:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:08,081 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2018-07-25 08:57:08,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:57:08,081 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 133 [2018-07-25 08:57:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:08,082 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:57:08,082 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:57:08,083 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:57:08,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:57:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 136. [2018-07-25 08:57:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:57:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2018-07-25 08:57:08,176 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 133 [2018-07-25 08:57:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:08,176 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2018-07-25 08:57:08,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:57:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2018-07-25 08:57:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:57:08,177 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:08,177 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1, 1, 1] [2018-07-25 08:57:08,177 INFO L415 AbstractCegarLoop]: === Iteration 194 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:08,177 INFO L82 PathProgramCache]: Analyzing trace with hash 948286407, now seen corresponding path program 191 times [2018-07-25 08:57:08,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 2145 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:08,357 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:08,357 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:57:08,357 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:57:08,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:57:08,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:57:08,358 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 68 states. [2018-07-25 08:57:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:08,587 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2018-07-25 08:57:08,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:57:08,588 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:57:08,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:08,588 INFO L225 Difference]: With dead ends: 204 [2018-07-25 08:57:08,588 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:57:08,589 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:57:08,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:57:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:57:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:57:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 08:57:08,682 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 134 [2018-07-25 08:57:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:08,683 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 08:57:08,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:57:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 08:57:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:57:08,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:08,683 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1, 1, 1] [2018-07-25 08:57:08,683 INFO L415 AbstractCegarLoop]: === Iteration 195 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:08,683 INFO L82 PathProgramCache]: Analyzing trace with hash 464606573, now seen corresponding path program 192 times [2018-07-25 08:57:08,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 2145 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:08,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:08,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:57:08,881 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:57:08,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:57:08,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:57:08,882 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 68 states. [2018-07-25 08:57:09,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:09,007 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2018-07-25 08:57:09,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:57:09,008 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:57:09,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:09,008 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:57:09,008 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:57:09,009 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:57:09,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:57:09,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 08:57:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:57:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2018-07-25 08:57:09,101 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2018-07-25 08:57:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:09,101 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2018-07-25 08:57:09,101 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:57:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2018-07-25 08:57:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:57:09,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:09,102 INFO L354 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1] [2018-07-25 08:57:09,102 INFO L415 AbstractCegarLoop]: === Iteration 196 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:09,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1517840353, now seen corresponding path program 193 times [2018-07-25 08:57:09,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:09,395 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:09,395 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:57:09,395 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:57:09,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:57:09,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:57:09,396 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 68 states. [2018-07-25 08:57:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:10,065 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2018-07-25 08:57:10,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:57:10,065 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 135 [2018-07-25 08:57:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:10,066 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:57:10,066 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:57:10,067 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:57:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:57:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 138. [2018-07-25 08:57:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:57:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2018-07-25 08:57:10,162 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 135 [2018-07-25 08:57:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:10,162 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2018-07-25 08:57:10,162 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:57:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2018-07-25 08:57:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:57:10,162 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:10,162 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1, 1, 1] [2018-07-25 08:57:10,163 INFO L415 AbstractCegarLoop]: === Iteration 197 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:10,163 INFO L82 PathProgramCache]: Analyzing trace with hash -191650835, now seen corresponding path program 194 times [2018-07-25 08:57:10,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 2211 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:10,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:10,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:57:10,341 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:57:10,342 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:57:10,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:57:10,342 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 69 states. [2018-07-25 08:57:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:10,610 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2018-07-25 08:57:10,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:57:10,610 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-25 08:57:10,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:10,610 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:57:10,610 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:57:10,611 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:57:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:57:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:57:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:57:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-25 08:57:10,702 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 136 [2018-07-25 08:57:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:10,702 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-25 08:57:10,702 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:57:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-25 08:57:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:57:10,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:10,703 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1, 1, 1] [2018-07-25 08:57:10,703 INFO L415 AbstractCegarLoop]: === Iteration 198 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:10,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1994143495, now seen corresponding path program 195 times [2018-07-25 08:57:10,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 2211 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:10,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:10,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:57:10,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:57:10,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:57:10,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:57:10,897 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 69 states. [2018-07-25 08:57:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:11,056 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-07-25 08:57:11,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:57:11,057 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-25 08:57:11,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:11,057 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:57:11,057 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 08:57:11,058 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:57:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 08:57:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 08:57:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:57:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2018-07-25 08:57:11,150 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 136 [2018-07-25 08:57:11,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:11,151 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2018-07-25 08:57:11,151 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:57:11,151 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2018-07-25 08:57:11,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:57:11,151 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:11,151 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1] [2018-07-25 08:57:11,152 INFO L415 AbstractCegarLoop]: === Iteration 199 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:11,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1688844679, now seen corresponding path program 196 times [2018-07-25 08:57:11,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:11,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:11,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:57:11,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:57:11,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:57:11,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:57:11,454 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 69 states. [2018-07-25 08:57:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:12,132 INFO L93 Difference]: Finished difference Result 209 states and 211 transitions. [2018-07-25 08:57:12,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:57:12,132 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 137 [2018-07-25 08:57:12,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:12,133 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:57:12,133 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:57:12,133 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:57:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:57:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 140. [2018-07-25 08:57:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:57:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2018-07-25 08:57:12,229 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 137 [2018-07-25 08:57:12,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:12,230 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2018-07-25 08:57:12,230 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:57:12,230 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2018-07-25 08:57:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:57:12,230 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:12,230 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1, 1, 1] [2018-07-25 08:57:12,230 INFO L415 AbstractCegarLoop]: === Iteration 200 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:12,231 INFO L82 PathProgramCache]: Analyzing trace with hash 814515975, now seen corresponding path program 197 times [2018-07-25 08:57:12,231 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 2278 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:12,394 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:12,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:57:12,394 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:57:12,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:57:12,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:57:12,395 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 70 states. [2018-07-25 08:57:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:12,646 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2018-07-25 08:57:12,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:57:12,647 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:57:12,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:12,647 INFO L225 Difference]: With dead ends: 210 [2018-07-25 08:57:12,647 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:57:12,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:57:12,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:57:12,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:57:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:57:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 08:57:12,732 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 138 [2018-07-25 08:57:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:12,732 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 08:57:12,732 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:57:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 08:57:12,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:57:12,733 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:12,733 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1, 1, 1] [2018-07-25 08:57:12,733 INFO L415 AbstractCegarLoop]: === Iteration 201 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:12,733 INFO L82 PathProgramCache]: Analyzing trace with hash -145336531, now seen corresponding path program 198 times [2018-07-25 08:57:12,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 2278 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:12,909 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:12,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:57:12,909 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:57:12,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:57:12,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:57:12,910 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 70 states. [2018-07-25 08:57:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:13,021 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2018-07-25 08:57:13,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:57:13,021 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:57:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:13,022 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:57:13,022 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:57:13,022 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:57:13,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:57:13,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 08:57:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:57:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2018-07-25 08:57:13,108 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 138 [2018-07-25 08:57:13,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:13,108 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2018-07-25 08:57:13,108 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:57:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2018-07-25 08:57:13,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 08:57:13,109 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:13,109 INFO L354 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1] [2018-07-25 08:57:13,109 INFO L415 AbstractCegarLoop]: === Iteration 202 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:13,109 INFO L82 PathProgramCache]: Analyzing trace with hash -210526687, now seen corresponding path program 199 times [2018-07-25 08:57:13,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:13,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:13,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:57:13,474 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:57:13,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:57:13,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:57:13,474 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand 70 states. [2018-07-25 08:57:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:14,139 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2018-07-25 08:57:14,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:57:14,139 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 139 [2018-07-25 08:57:14,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:14,140 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:57:14,140 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:57:14,140 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:57:14,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:57:14,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 142. [2018-07-25 08:57:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:57:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2018-07-25 08:57:14,237 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 139 [2018-07-25 08:57:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:14,237 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2018-07-25 08:57:14,237 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:57:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2018-07-25 08:57:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:57:14,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:14,238 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1, 1, 1] [2018-07-25 08:57:14,238 INFO L415 AbstractCegarLoop]: === Iteration 203 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:14,238 INFO L82 PathProgramCache]: Analyzing trace with hash 2063545773, now seen corresponding path program 200 times [2018-07-25 08:57:14,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 2346 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:14,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:14,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:57:14,407 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:57:14,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:57:14,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:57:14,408 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 71 states. [2018-07-25 08:57:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:14,678 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2018-07-25 08:57:14,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:57:14,678 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-25 08:57:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:14,678 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:57:14,678 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:57:14,679 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:57:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:57:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:57:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:57:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 08:57:14,764 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 140 [2018-07-25 08:57:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:14,764 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 08:57:14,764 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:57:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 08:57:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:57:14,765 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:14,765 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1, 1, 1] [2018-07-25 08:57:14,765 INFO L415 AbstractCegarLoop]: === Iteration 204 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:14,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1922078137, now seen corresponding path program 201 times [2018-07-25 08:57:14,765 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 2346 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:14,942 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:14,942 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:57:14,942 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:57:14,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:57:14,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:57:14,943 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 71 states. [2018-07-25 08:57:15,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:15,056 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-07-25 08:57:15,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:57:15,056 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-25 08:57:15,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:15,056 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:57:15,057 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:57:15,057 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:57:15,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:57:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 08:57:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:57:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2018-07-25 08:57:15,144 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 140 [2018-07-25 08:57:15,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:15,144 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2018-07-25 08:57:15,144 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:57:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2018-07-25 08:57:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:57:15,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:15,145 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1] [2018-07-25 08:57:15,145 INFO L415 AbstractCegarLoop]: === Iteration 205 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:15,145 INFO L82 PathProgramCache]: Analyzing trace with hash 545058375, now seen corresponding path program 202 times [2018-07-25 08:57:15,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:15,411 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:15,411 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:57:15,411 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:57:15,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:57:15,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:57:15,412 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 71 states. [2018-07-25 08:57:16,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:16,134 INFO L93 Difference]: Finished difference Result 215 states and 217 transitions. [2018-07-25 08:57:16,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:57:16,135 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 141 [2018-07-25 08:57:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:16,135 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:57:16,135 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:57:16,136 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:57:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:57:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2018-07-25 08:57:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:57:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions. [2018-07-25 08:57:16,281 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 141 [2018-07-25 08:57:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:16,281 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 146 transitions. [2018-07-25 08:57:16,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:57:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 146 transitions. [2018-07-25 08:57:16,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:57:16,282 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:16,282 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1, 1, 1] [2018-07-25 08:57:16,282 INFO L415 AbstractCegarLoop]: === Iteration 206 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:16,282 INFO L82 PathProgramCache]: Analyzing trace with hash -283121081, now seen corresponding path program 203 times [2018-07-25 08:57:16,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 2415 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:16,486 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:16,486 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:57:16,486 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:57:16,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:57:16,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:57:16,487 INFO L87 Difference]: Start difference. First operand 144 states and 146 transitions. Second operand 72 states. [2018-07-25 08:57:16,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:16,799 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2018-07-25 08:57:16,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:57:16,799 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:57:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:16,800 INFO L225 Difference]: With dead ends: 216 [2018-07-25 08:57:16,800 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:57:16,800 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:57:16,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:57:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:57:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:57:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-25 08:57:16,906 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 142 [2018-07-25 08:57:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:16,906 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-25 08:57:16,906 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:57:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-25 08:57:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:57:16,906 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:16,906 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1, 1, 1] [2018-07-25 08:57:16,907 INFO L415 AbstractCegarLoop]: === Iteration 207 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:16,907 INFO L82 PathProgramCache]: Analyzing trace with hash 716589293, now seen corresponding path program 204 times [2018-07-25 08:57:16,907 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 2415 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:17,124 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:17,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:57:17,125 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:57:17,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:57:17,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:57:17,125 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 72 states. [2018-07-25 08:57:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:17,284 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2018-07-25 08:57:17,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:57:17,285 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:57:17,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:17,285 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:57:17,285 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 08:57:17,285 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:57:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 08:57:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 08:57:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:57:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2018-07-25 08:57:17,379 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 142 [2018-07-25 08:57:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:17,379 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2018-07-25 08:57:17,379 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:57:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2018-07-25 08:57:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:57:17,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:17,380 INFO L354 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1] [2018-07-25 08:57:17,380 INFO L415 AbstractCegarLoop]: === Iteration 208 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:17,380 INFO L82 PathProgramCache]: Analyzing trace with hash 739370081, now seen corresponding path program 205 times [2018-07-25 08:57:17,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:17,717 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:17,717 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:57:17,717 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:57:17,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:57:17,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:57:17,718 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 72 states. [2018-07-25 08:57:18,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:18,435 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2018-07-25 08:57:18,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:57:18,435 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 143 [2018-07-25 08:57:18,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:18,436 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:57:18,436 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:57:18,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:57:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:57:18,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 146. [2018-07-25 08:57:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:57:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2018-07-25 08:57:18,544 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 143 [2018-07-25 08:57:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:18,544 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2018-07-25 08:57:18,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:57:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2018-07-25 08:57:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:57:18,545 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:18,545 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1, 1, 1] [2018-07-25 08:57:18,545 INFO L415 AbstractCegarLoop]: === Iteration 209 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:18,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1445574509, now seen corresponding path program 206 times [2018-07-25 08:57:18,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2485 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:18,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:18,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:57:18,754 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:57:18,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:57:18,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:57:18,754 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 73 states. [2018-07-25 08:57:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:19,046 INFO L93 Difference]: Finished difference Result 219 states and 221 transitions. [2018-07-25 08:57:19,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:57:19,046 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-25 08:57:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:19,047 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:57:19,047 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:57:19,047 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:57:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:57:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:57:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:57:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 08:57:19,150 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 144 [2018-07-25 08:57:19,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:19,150 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 08:57:19,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:57:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 08:57:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:57:19,151 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:19,151 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1, 1, 1] [2018-07-25 08:57:19,151 INFO L415 AbstractCegarLoop]: === Iteration 210 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:19,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1923142265, now seen corresponding path program 207 times [2018-07-25 08:57:19,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2485 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:19,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:19,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:57:19,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:57:19,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:57:19,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:57:19,367 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 73 states. [2018-07-25 08:57:19,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:19,515 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-07-25 08:57:19,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:57:19,515 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-25 08:57:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:19,516 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:57:19,516 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:57:19,516 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:57:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:57:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 08:57:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:57:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2018-07-25 08:57:19,619 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 144 [2018-07-25 08:57:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:19,619 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2018-07-25 08:57:19,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:57:19,619 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2018-07-25 08:57:19,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 08:57:19,620 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:19,620 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1] [2018-07-25 08:57:19,620 INFO L415 AbstractCegarLoop]: === Iteration 211 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:19,620 INFO L82 PathProgramCache]: Analyzing trace with hash 512070407, now seen corresponding path program 208 times [2018-07-25 08:57:19,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:19,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:19,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:57:19,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:57:19,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:57:19,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:57:19,965 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 73 states. [2018-07-25 08:57:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:20,721 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2018-07-25 08:57:20,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:57:20,722 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 145 [2018-07-25 08:57:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:20,722 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:57:20,722 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:57:20,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:57:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:57:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 148. [2018-07-25 08:57:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:57:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2018-07-25 08:57:20,832 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 145 [2018-07-25 08:57:20,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:20,832 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2018-07-25 08:57:20,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:57:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2018-07-25 08:57:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:57:20,833 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:20,833 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1, 1, 1] [2018-07-25 08:57:20,833 INFO L415 AbstractCegarLoop]: === Iteration 212 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:20,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1305748089, now seen corresponding path program 209 times [2018-07-25 08:57:20,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 2556 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:21,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:21,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:57:21,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:57:21,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:57:21,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:57:21,053 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 74 states. [2018-07-25 08:57:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:21,337 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2018-07-25 08:57:21,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:57:21,337 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:57:21,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:21,338 INFO L225 Difference]: With dead ends: 222 [2018-07-25 08:57:21,338 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:57:21,339 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:57:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:57:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:57:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:57:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 08:57:21,450 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 146 [2018-07-25 08:57:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:21,450 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 08:57:21,450 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:57:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 08:57:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:57:21,451 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:21,451 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1, 1, 1] [2018-07-25 08:57:21,451 INFO L415 AbstractCegarLoop]: === Iteration 213 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:21,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1638214317, now seen corresponding path program 210 times [2018-07-25 08:57:21,451 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 2556 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:21,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:21,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:57:21,719 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:57:21,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:57:21,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:57:21,720 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 74 states. [2018-07-25 08:57:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:21,844 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2018-07-25 08:57:21,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:57:21,844 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:57:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:21,844 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:57:21,845 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:57:21,845 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:57:21,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:57:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 08:57:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:57:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2018-07-25 08:57:21,939 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 146 [2018-07-25 08:57:21,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:21,940 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2018-07-25 08:57:21,940 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:57:21,940 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2018-07-25 08:57:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:57:21,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:21,940 INFO L354 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1] [2018-07-25 08:57:21,940 INFO L415 AbstractCegarLoop]: === Iteration 214 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash -755025247, now seen corresponding path program 211 times [2018-07-25 08:57:21,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:22,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:22,243 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:57:22,243 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:57:22,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:57:22,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:57:22,244 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 74 states. [2018-07-25 08:57:23,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:23,016 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2018-07-25 08:57:23,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:57:23,016 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 147 [2018-07-25 08:57:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:23,017 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:57:23,017 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:57:23,018 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:57:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:57:23,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 150. [2018-07-25 08:57:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:57:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2018-07-25 08:57:23,130 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 147 [2018-07-25 08:57:23,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:23,131 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2018-07-25 08:57:23,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:57:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2018-07-25 08:57:23,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:57:23,131 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:23,131 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1, 1, 1] [2018-07-25 08:57:23,131 INFO L415 AbstractCegarLoop]: === Iteration 215 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:23,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1931007699, now seen corresponding path program 212 times [2018-07-25 08:57:23,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 2628 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:23,349 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:23,349 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:57:23,349 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:57:23,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:57:23,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:57:23,350 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand 75 states. [2018-07-25 08:57:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:23,623 INFO L93 Difference]: Finished difference Result 225 states and 227 transitions. [2018-07-25 08:57:23,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:57:23,623 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-25 08:57:23,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:23,624 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:57:23,624 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:57:23,624 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:57:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:57:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:57:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:57:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-25 08:57:23,777 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 148 [2018-07-25 08:57:23,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:23,777 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-25 08:57:23,777 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:57:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-25 08:57:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:57:23,778 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:23,778 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1, 1, 1] [2018-07-25 08:57:23,778 INFO L415 AbstractCegarLoop]: === Iteration 216 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:23,778 INFO L82 PathProgramCache]: Analyzing trace with hash -862486329, now seen corresponding path program 213 times [2018-07-25 08:57:23,778 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 2628 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:24,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:24,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:57:24,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:57:24,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:57:24,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:57:24,020 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 75 states. [2018-07-25 08:57:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:24,164 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-07-25 08:57:24,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:57:24,164 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-25 08:57:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:24,165 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:57:24,165 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:57:24,165 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:57:24,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:57:24,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 08:57:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:57:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2018-07-25 08:57:24,273 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 148 [2018-07-25 08:57:24,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:24,273 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2018-07-25 08:57:24,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:57:24,273 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2018-07-25 08:57:24,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:57:24,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:24,274 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1] [2018-07-25 08:57:24,274 INFO L415 AbstractCegarLoop]: === Iteration 217 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:24,274 INFO L82 PathProgramCache]: Analyzing trace with hash -967333945, now seen corresponding path program 214 times [2018-07-25 08:57:24,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:24,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:24,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:57:24,579 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:57:24,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:57:24,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:57:24,580 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 75 states. [2018-07-25 08:57:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:25,299 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2018-07-25 08:57:25,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:57:25,299 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 149 [2018-07-25 08:57:25,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:25,299 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:57:25,300 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:57:25,300 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:57:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:57:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 152. [2018-07-25 08:57:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:57:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2018-07-25 08:57:25,406 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 149 [2018-07-25 08:57:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:25,406 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions. [2018-07-25 08:57:25,406 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:57:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions. [2018-07-25 08:57:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:57:25,406 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:25,406 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1, 1, 1] [2018-07-25 08:57:25,406 INFO L415 AbstractCegarLoop]: === Iteration 218 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:25,407 INFO L82 PathProgramCache]: Analyzing trace with hash 77357255, now seen corresponding path program 215 times [2018-07-25 08:57:25,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 2701 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:25,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:25,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:57:25,629 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:57:25,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:57:25,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:57:25,630 INFO L87 Difference]: Start difference. First operand 152 states and 154 transitions. Second operand 76 states. [2018-07-25 08:57:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:25,919 INFO L93 Difference]: Finished difference Result 228 states and 230 transitions. [2018-07-25 08:57:25,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:57:25,919 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:57:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:25,920 INFO L225 Difference]: With dead ends: 228 [2018-07-25 08:57:25,920 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:57:25,920 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:57:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:57:26,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:57:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:57:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 08:57:26,020 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 150 [2018-07-25 08:57:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:26,021 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 08:57:26,021 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:57:26,021 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 08:57:26,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:57:26,021 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:26,021 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1, 1, 1] [2018-07-25 08:57:26,021 INFO L415 AbstractCegarLoop]: === Iteration 219 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:26,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1158218643, now seen corresponding path program 216 times [2018-07-25 08:57:26,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 2701 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:26,310 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:26,310 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:57:26,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:57:26,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:57:26,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:57:26,312 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 76 states. [2018-07-25 08:57:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:26,563 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2018-07-25 08:57:26,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:57:26,564 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:57:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:26,564 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:57:26,564 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:57:26,565 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:57:26,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:57:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 08:57:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:57:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2018-07-25 08:57:26,743 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 150 [2018-07-25 08:57:26,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:26,744 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2018-07-25 08:57:26,744 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:57:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2018-07-25 08:57:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 08:57:26,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:26,745 INFO L354 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1] [2018-07-25 08:57:26,745 INFO L415 AbstractCegarLoop]: === Iteration 220 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:26,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1545101087, now seen corresponding path program 217 times [2018-07-25 08:57:26,745 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:27,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:27,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:57:27,059 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:57:27,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:57:27,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:57:27,059 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand 76 states. [2018-07-25 08:57:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:27,789 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2018-07-25 08:57:27,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:57:27,789 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 151 [2018-07-25 08:57:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:27,789 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:57:27,789 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:57:27,790 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:57:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:57:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 154. [2018-07-25 08:57:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:57:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2018-07-25 08:57:27,894 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 151 [2018-07-25 08:57:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:27,895 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions. [2018-07-25 08:57:27,895 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:57:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions. [2018-07-25 08:57:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:57:27,895 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:27,895 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1, 1, 1] [2018-07-25 08:57:27,895 INFO L415 AbstractCegarLoop]: === Iteration 221 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:27,896 INFO L82 PathProgramCache]: Analyzing trace with hash -653554963, now seen corresponding path program 218 times [2018-07-25 08:57:27,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 2775 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:28,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:28,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:57:28,091 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:57:28,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:57:28,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:57:28,092 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand 77 states. [2018-07-25 08:57:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:28,380 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2018-07-25 08:57:28,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:57:28,380 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-25 08:57:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:28,381 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:57:28,381 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:57:28,381 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:57:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:57:28,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:57:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:57:28,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 08:57:28,486 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 152 [2018-07-25 08:57:28,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:28,486 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 08:57:28,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:57:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 08:57:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:57:28,487 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:28,487 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1, 1, 1] [2018-07-25 08:57:28,487 INFO L415 AbstractCegarLoop]: === Iteration 222 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:28,488 INFO L82 PathProgramCache]: Analyzing trace with hash -301702137, now seen corresponding path program 219 times [2018-07-25 08:57:28,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 2775 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:28,699 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:28,699 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:57:28,700 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:57:28,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:57:28,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:57:28,701 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 77 states. [2018-07-25 08:57:28,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:28,832 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-07-25 08:57:28,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:57:28,832 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-25 08:57:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:28,833 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:57:28,833 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:57:28,833 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:57:28,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:57:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 08:57:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:57:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2018-07-25 08:57:28,935 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 152 [2018-07-25 08:57:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:28,935 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2018-07-25 08:57:28,935 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:57:28,935 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2018-07-25 08:57:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:57:28,936 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:28,936 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1] [2018-07-25 08:57:28,936 INFO L415 AbstractCegarLoop]: === Iteration 223 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:28,936 INFO L82 PathProgramCache]: Analyzing trace with hash -762893177, now seen corresponding path program 220 times [2018-07-25 08:57:28,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:29,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:29,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:57:29,284 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:57:29,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:57:29,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:57:29,284 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 77 states. [2018-07-25 08:57:30,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:30,014 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2018-07-25 08:57:30,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:57:30,014 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 153 [2018-07-25 08:57:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:30,014 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:57:30,015 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 08:57:30,015 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:57:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 08:57:30,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 156. [2018-07-25 08:57:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:57:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2018-07-25 08:57:30,123 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 153 [2018-07-25 08:57:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:30,123 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2018-07-25 08:57:30,123 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:57:30,123 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2018-07-25 08:57:30,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:57:30,123 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:30,123 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1, 1, 1] [2018-07-25 08:57:30,124 INFO L415 AbstractCegarLoop]: === Iteration 224 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:30,124 INFO L82 PathProgramCache]: Analyzing trace with hash 2120053767, now seen corresponding path program 221 times [2018-07-25 08:57:30,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2850 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:30,327 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:30,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:57:30,327 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:57:30,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:57:30,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:57:30,328 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 78 states. [2018-07-25 08:57:30,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:30,635 INFO L93 Difference]: Finished difference Result 234 states and 236 transitions. [2018-07-25 08:57:30,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:57:30,635 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:57:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:30,636 INFO L225 Difference]: With dead ends: 234 [2018-07-25 08:57:30,636 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:57:30,637 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:57:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:57:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:57:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:57:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-25 08:57:30,816 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 154 [2018-07-25 08:57:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:30,816 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-25 08:57:30,816 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:57:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-25 08:57:30,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:57:30,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:30,817 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1, 1, 1] [2018-07-25 08:57:30,817 INFO L415 AbstractCegarLoop]: === Iteration 225 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:30,818 INFO L82 PathProgramCache]: Analyzing trace with hash 142589485, now seen corresponding path program 222 times [2018-07-25 08:57:30,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2850 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:31,045 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:31,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:57:31,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:57:31,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:57:31,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:57:31,046 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 78 states. [2018-07-25 08:57:31,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:31,178 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2018-07-25 08:57:31,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:57:31,178 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:57:31,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:31,179 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:57:31,179 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 08:57:31,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:57:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 08:57:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 08:57:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:57:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2018-07-25 08:57:31,285 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 154 [2018-07-25 08:57:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:31,285 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2018-07-25 08:57:31,285 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:57:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2018-07-25 08:57:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:57:31,286 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:31,286 INFO L354 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1] [2018-07-25 08:57:31,286 INFO L415 AbstractCegarLoop]: === Iteration 226 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:31,286 INFO L82 PathProgramCache]: Analyzing trace with hash 125245217, now seen corresponding path program 223 times [2018-07-25 08:57:31,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:31,603 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:31,603 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:57:31,603 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:57:31,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:57:31,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:57:31,604 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 78 states. [2018-07-25 08:57:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:32,407 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2018-07-25 08:57:32,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:57:32,407 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 155 [2018-07-25 08:57:32,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:32,408 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:57:32,408 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:57:32,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:57:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:57:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 158. [2018-07-25 08:57:32,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:57:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2018-07-25 08:57:32,519 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 155 [2018-07-25 08:57:32,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:32,519 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2018-07-25 08:57:32,519 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:57:32,520 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2018-07-25 08:57:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:57:32,520 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:32,520 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1, 1, 1] [2018-07-25 08:57:32,520 INFO L415 AbstractCegarLoop]: === Iteration 227 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:32,520 INFO L82 PathProgramCache]: Analyzing trace with hash -412427091, now seen corresponding path program 224 times [2018-07-25 08:57:32,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2926 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:32,740 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:32,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:57:32,740 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:57:32,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:57:32,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:57:32,742 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 79 states. [2018-07-25 08:57:33,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:33,078 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2018-07-25 08:57:33,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:57:33,078 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-25 08:57:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:33,079 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:57:33,079 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:57:33,079 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:57:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:57:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:57:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:57:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 08:57:33,211 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 156 [2018-07-25 08:57:33,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:33,212 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 08:57:33,212 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:57:33,212 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 08:57:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:57:33,212 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:33,212 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1, 1, 1] [2018-07-25 08:57:33,212 INFO L415 AbstractCegarLoop]: === Iteration 228 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:33,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1584277689, now seen corresponding path program 225 times [2018-07-25 08:57:33,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2926 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:33,428 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:33,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:57:33,428 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:57:33,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:57:33,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:57:33,429 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 79 states. [2018-07-25 08:57:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:33,569 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2018-07-25 08:57:33,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:57:33,569 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-25 08:57:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:33,570 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:57:33,570 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:57:33,571 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:57:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:57:33,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 08:57:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:57:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2018-07-25 08:57:33,679 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 156 [2018-07-25 08:57:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:33,679 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2018-07-25 08:57:33,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:57:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2018-07-25 08:57:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 08:57:33,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:33,680 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1] [2018-07-25 08:57:33,680 INFO L415 AbstractCegarLoop]: === Iteration 229 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:33,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1868029625, now seen corresponding path program 226 times [2018-07-25 08:57:33,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:34,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:34,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:57:34,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:57:34,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:57:34,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:57:34,009 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 79 states. [2018-07-25 08:57:34,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:34,845 INFO L93 Difference]: Finished difference Result 239 states and 241 transitions. [2018-07-25 08:57:34,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:57:34,845 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 157 [2018-07-25 08:57:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:34,846 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:57:34,846 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 08:57:34,847 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:57:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 08:57:34,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 160. [2018-07-25 08:57:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:57:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 162 transitions. [2018-07-25 08:57:34,977 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 162 transitions. Word has length 157 [2018-07-25 08:57:34,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:34,977 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 162 transitions. [2018-07-25 08:57:34,977 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:57:34,977 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 162 transitions. [2018-07-25 08:57:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:57:34,978 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:34,978 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1, 1, 1] [2018-07-25 08:57:34,978 INFO L415 AbstractCegarLoop]: === Iteration 230 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2074405049, now seen corresponding path program 227 times [2018-07-25 08:57:34,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 3003 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:35,247 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:35,247 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:57:35,248 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:57:35,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:57:35,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:57:35,249 INFO L87 Difference]: Start difference. First operand 160 states and 162 transitions. Second operand 80 states. [2018-07-25 08:57:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:35,624 INFO L93 Difference]: Finished difference Result 240 states and 242 transitions. [2018-07-25 08:57:35,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:57:35,624 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:57:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:35,624 INFO L225 Difference]: With dead ends: 240 [2018-07-25 08:57:35,624 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:57:35,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:57:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:57:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:57:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:57:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 08:57:35,741 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 158 [2018-07-25 08:57:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:35,742 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 08:57:35,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:57:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 08:57:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:57:35,742 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:35,742 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1, 1, 1] [2018-07-25 08:57:35,742 INFO L415 AbstractCegarLoop]: === Iteration 231 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:35,742 INFO L82 PathProgramCache]: Analyzing trace with hash 252932077, now seen corresponding path program 228 times [2018-07-25 08:57:35,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:35,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 3003 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:35,969 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:35,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:57:35,970 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:57:35,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:57:35,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:57:35,970 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 80 states. [2018-07-25 08:57:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:36,111 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2018-07-25 08:57:36,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:57:36,112 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:57:36,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:36,112 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:57:36,112 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:57:36,113 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:57:36,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:57:36,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 08:57:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:57:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2018-07-25 08:57:36,225 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 158 [2018-07-25 08:57:36,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:36,225 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2018-07-25 08:57:36,225 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:57:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2018-07-25 08:57:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:57:36,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:36,226 INFO L354 BasicCegarLoop]: trace histogram [77, 77, 1, 1, 1, 1, 1] [2018-07-25 08:57:36,226 INFO L415 AbstractCegarLoop]: === Iteration 232 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash -749101727, now seen corresponding path program 229 times [2018-07-25 08:57:36,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:36,635 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:36,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:57:36,636 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:57:36,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:57:36,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:57:36,636 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand 80 states. [2018-07-25 08:57:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:37,512 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-07-25 08:57:37,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:57:37,512 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 159 [2018-07-25 08:57:37,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:37,513 INFO L225 Difference]: With dead ends: 242 [2018-07-25 08:57:37,513 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:57:37,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:57:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:57:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 162. [2018-07-25 08:57:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:57:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2018-07-25 08:57:37,644 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 159 [2018-07-25 08:57:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:37,645 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2018-07-25 08:57:37,645 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:57:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2018-07-25 08:57:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:57:37,645 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:37,645 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1, 1, 1] [2018-07-25 08:57:37,646 INFO L415 AbstractCegarLoop]: === Iteration 233 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:37,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1747378579, now seen corresponding path program 230 times [2018-07-25 08:57:37,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 3081 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:37,910 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:37,911 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:57:37,911 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:57:37,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:57:37,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:57:37,912 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 81 states. [2018-07-25 08:57:38,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:38,283 INFO L93 Difference]: Finished difference Result 243 states and 245 transitions. [2018-07-25 08:57:38,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:57:38,283 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-25 08:57:38,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:38,283 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:57:38,283 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:57:38,284 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:57:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:57:38,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:57:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:57:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-25 08:57:38,410 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 160 [2018-07-25 08:57:38,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:38,410 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-25 08:57:38,410 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:57:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-25 08:57:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:57:38,411 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:38,411 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1, 1, 1] [2018-07-25 08:57:38,411 INFO L415 AbstractCegarLoop]: === Iteration 234 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:38,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1680595591, now seen corresponding path program 231 times [2018-07-25 08:57:38,411 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 3081 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:38,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:38,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:57:38,684 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:57:38,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:57:38,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:57:38,685 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 81 states. [2018-07-25 08:57:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:38,850 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-07-25 08:57:38,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:57:38,850 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-25 08:57:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:38,850 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:57:38,851 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 08:57:38,851 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:57:38,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 08:57:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 08:57:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:57:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2018-07-25 08:57:38,986 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 160 [2018-07-25 08:57:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:38,986 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2018-07-25 08:57:38,986 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:57:38,987 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2018-07-25 08:57:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:57:38,987 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:38,987 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 1, 1, 1, 1, 1] [2018-07-25 08:57:38,987 INFO L415 AbstractCegarLoop]: === Iteration 235 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:38,987 INFO L82 PathProgramCache]: Analyzing trace with hash 558794247, now seen corresponding path program 232 times [2018-07-25 08:57:38,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:39,394 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:39,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:57:39,394 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:57:39,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:57:39,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:57:39,395 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 81 states. [2018-07-25 08:57:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:40,328 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2018-07-25 08:57:40,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:57:40,328 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 161 [2018-07-25 08:57:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:40,329 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:57:40,329 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 08:57:40,330 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:57:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 08:57:40,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 164. [2018-07-25 08:57:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:57:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2018-07-25 08:57:40,465 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 161 [2018-07-25 08:57:40,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:40,465 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2018-07-25 08:57:40,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:57:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2018-07-25 08:57:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:57:40,466 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:40,466 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1, 1, 1] [2018-07-25 08:57:40,466 INFO L415 AbstractCegarLoop]: === Iteration 236 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:40,466 INFO L82 PathProgramCache]: Analyzing trace with hash 142690951, now seen corresponding path program 233 times [2018-07-25 08:57:40,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 3160 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:40,739 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:40,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:57:40,739 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:57:40,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:57:40,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:57:40,740 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 82 states. [2018-07-25 08:57:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:41,102 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2018-07-25 08:57:41,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:57:41,102 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:57:41,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:41,102 INFO L225 Difference]: With dead ends: 246 [2018-07-25 08:57:41,102 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:57:41,103 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:57:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:57:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:57:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:57:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 08:57:41,232 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 162 [2018-07-25 08:57:41,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:41,232 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 08:57:41,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:57:41,233 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 08:57:41,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:57:41,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:41,233 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1, 1, 1] [2018-07-25 08:57:41,233 INFO L415 AbstractCegarLoop]: === Iteration 237 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:41,233 INFO L82 PathProgramCache]: Analyzing trace with hash -964292179, now seen corresponding path program 234 times [2018-07-25 08:57:41,233 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 3160 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:41,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:41,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:57:41,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:57:41,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:57:41,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:57:41,517 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 82 states. [2018-07-25 08:57:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:41,701 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2018-07-25 08:57:41,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:57:41,701 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:57:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:41,701 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:57:41,702 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:57:41,702 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:57:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:57:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 08:57:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:57:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2018-07-25 08:57:41,832 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 162 [2018-07-25 08:57:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:41,832 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2018-07-25 08:57:41,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:57:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2018-07-25 08:57:41,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 08:57:41,832 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:41,833 INFO L354 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1] [2018-07-25 08:57:41,833 INFO L415 AbstractCegarLoop]: === Iteration 238 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:41,833 INFO L82 PathProgramCache]: Analyzing trace with hash 171652001, now seen corresponding path program 235 times [2018-07-25 08:57:41,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:42,252 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:42,252 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:57:42,252 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:57:42,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:57:42,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:57:42,253 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand 82 states. [2018-07-25 08:57:43,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:43,208 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2018-07-25 08:57:43,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:57:43,208 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 163 [2018-07-25 08:57:43,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:43,209 INFO L225 Difference]: With dead ends: 248 [2018-07-25 08:57:43,209 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:57:43,210 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:57:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:57:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 166. [2018-07-25 08:57:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:57:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2018-07-25 08:57:43,348 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 163 [2018-07-25 08:57:43,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:43,348 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2018-07-25 08:57:43,348 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:57:43,348 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2018-07-25 08:57:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:57:43,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:43,348 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1, 1, 1] [2018-07-25 08:57:43,349 INFO L415 AbstractCegarLoop]: === Iteration 239 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:43,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1026183213, now seen corresponding path program 236 times [2018-07-25 08:57:43,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 3240 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:43,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:43,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:57:43,629 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:57:43,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:57:43,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:57:43,630 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 83 states. [2018-07-25 08:57:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:43,985 INFO L93 Difference]: Finished difference Result 249 states and 251 transitions. [2018-07-25 08:57:43,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:57:43,985 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-25 08:57:43,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:43,985 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:57:43,985 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:57:43,986 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:57:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:57:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:57:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:57:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 08:57:44,119 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 164 [2018-07-25 08:57:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:44,119 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 08:57:44,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:57:44,119 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 08:57:44,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:57:44,120 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:44,120 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1, 1, 1] [2018-07-25 08:57:44,120 INFO L415 AbstractCegarLoop]: === Iteration 240 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:44,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1069444551, now seen corresponding path program 237 times [2018-07-25 08:57:44,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 3240 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:44,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:44,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:57:44,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:57:44,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:57:44,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:57:44,416 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 83 states. [2018-07-25 08:57:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:44,605 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-07-25 08:57:44,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:57:44,605 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-25 08:57:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:44,606 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:57:44,606 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:57:44,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:57:44,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:57:44,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 08:57:44,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:57:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2018-07-25 08:57:44,741 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 164 [2018-07-25 08:57:44,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:44,742 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2018-07-25 08:57:44,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:57:44,742 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2018-07-25 08:57:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:57:44,742 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:44,742 INFO L354 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1] [2018-07-25 08:57:44,742 INFO L415 AbstractCegarLoop]: === Iteration 241 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:44,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1207018809, now seen corresponding path program 238 times [2018-07-25 08:57:44,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:45,205 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:45,205 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:57:45,205 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:57:45,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:57:45,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:57:45,206 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 83 states. [2018-07-25 08:57:46,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:46,154 INFO L93 Difference]: Finished difference Result 251 states and 253 transitions. [2018-07-25 08:57:46,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:57:46,154 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 165 [2018-07-25 08:57:46,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:46,155 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:57:46,155 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 08:57:46,156 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:57:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 08:57:46,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 168. [2018-07-25 08:57:46,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:57:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2018-07-25 08:57:46,376 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 165 [2018-07-25 08:57:46,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:46,376 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2018-07-25 08:57:46,377 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:57:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2018-07-25 08:57:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:57:46,377 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:46,377 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1, 1, 1] [2018-07-25 08:57:46,378 INFO L415 AbstractCegarLoop]: === Iteration 242 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:46,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1237061063, now seen corresponding path program 239 times [2018-07-25 08:57:46,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3321 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:46,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:46,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:57:46,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:57:46,696 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:57:46,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:57:46,697 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand 84 states. [2018-07-25 08:57:47,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:47,062 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2018-07-25 08:57:47,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:57:47,063 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:57:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:47,063 INFO L225 Difference]: With dead ends: 252 [2018-07-25 08:57:47,063 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:57:47,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:57:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:57:47,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:57:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:57:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-25 08:57:47,200 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 166 [2018-07-25 08:57:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:47,200 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-25 08:57:47,200 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:57:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-25 08:57:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:57:47,201 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:47,201 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1, 1, 1] [2018-07-25 08:57:47,201 INFO L415 AbstractCegarLoop]: === Iteration 243 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:47,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1716804755, now seen corresponding path program 240 times [2018-07-25 08:57:47,202 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3321 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:47,499 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:47,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:57:47,499 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:57:47,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:57:47,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:57:47,500 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 84 states. [2018-07-25 08:57:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:47,677 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2018-07-25 08:57:47,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:57:47,677 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:57:47,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:47,677 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:57:47,677 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 08:57:47,678 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:57:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 08:57:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 08:57:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:57:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2018-07-25 08:57:47,816 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 166 [2018-07-25 08:57:47,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:47,817 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2018-07-25 08:57:47,817 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:57:47,817 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2018-07-25 08:57:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:57:47,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:47,817 INFO L354 BasicCegarLoop]: trace histogram [81, 81, 1, 1, 1, 1, 1] [2018-07-25 08:57:47,817 INFO L415 AbstractCegarLoop]: === Iteration 244 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:47,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1681401375, now seen corresponding path program 241 times [2018-07-25 08:57:47,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:48,272 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:48,272 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:57:48,272 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:57:48,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:57:48,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:57:48,273 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand 84 states. [2018-07-25 08:57:49,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:49,283 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2018-07-25 08:57:49,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:57:49,284 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 167 [2018-07-25 08:57:49,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:49,284 INFO L225 Difference]: With dead ends: 254 [2018-07-25 08:57:49,284 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:57:49,285 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:57:49,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:57:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 170. [2018-07-25 08:57:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:57:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 172 transitions. [2018-07-25 08:57:49,444 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 172 transitions. Word has length 167 [2018-07-25 08:57:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:49,445 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 172 transitions. [2018-07-25 08:57:49,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:57:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 172 transitions. [2018-07-25 08:57:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:57:49,445 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:49,445 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1, 1, 1] [2018-07-25 08:57:49,445 INFO L415 AbstractCegarLoop]: === Iteration 245 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:49,445 INFO L82 PathProgramCache]: Analyzing trace with hash -583896595, now seen corresponding path program 242 times [2018-07-25 08:57:49,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 3403 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:49,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:49,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:57:49,687 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:57:49,687 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:57:49,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:57:49,688 INFO L87 Difference]: Start difference. First operand 170 states and 172 transitions. Second operand 85 states. [2018-07-25 08:57:50,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:50,072 INFO L93 Difference]: Finished difference Result 255 states and 257 transitions. [2018-07-25 08:57:50,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:57:50,072 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-25 08:57:50,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:50,072 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:57:50,073 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:57:50,073 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:57:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:57:50,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:57:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:57:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 08:57:50,203 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 168 [2018-07-25 08:57:50,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:50,203 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 08:57:50,203 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:57:50,203 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 08:57:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:57:50,203 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:50,203 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1, 1, 1] [2018-07-25 08:57:50,203 INFO L415 AbstractCegarLoop]: === Iteration 246 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:50,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1959423737, now seen corresponding path program 243 times [2018-07-25 08:57:50,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 3403 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:50,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:50,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:57:50,489 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:57:50,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:57:50,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:57:50,489 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 85 states. [2018-07-25 08:57:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:50,685 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2018-07-25 08:57:50,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:57:50,685 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-25 08:57:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:50,686 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:57:50,686 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:57:50,687 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:57:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:57:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 08:57:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:57:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2018-07-25 08:57:50,826 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 168 [2018-07-25 08:57:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:50,827 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2018-07-25 08:57:50,827 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:57:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2018-07-25 08:57:50,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 08:57:50,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:50,827 INFO L354 BasicCegarLoop]: trace histogram [82, 82, 1, 1, 1, 1, 1] [2018-07-25 08:57:50,827 INFO L415 AbstractCegarLoop]: === Iteration 247 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:50,828 INFO L82 PathProgramCache]: Analyzing trace with hash -612655225, now seen corresponding path program 244 times [2018-07-25 08:57:50,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:51,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:51,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:57:51,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:57:51,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:57:51,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:57:51,284 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 85 states. [2018-07-25 08:57:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:52,312 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2018-07-25 08:57:52,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:57:52,313 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 169 [2018-07-25 08:57:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:52,313 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:57:52,313 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 08:57:52,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:57:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 08:57:52,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 172. [2018-07-25 08:57:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:57:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2018-07-25 08:57:52,464 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 169 [2018-07-25 08:57:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:52,465 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2018-07-25 08:57:52,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:57:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2018-07-25 08:57:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:57:52,465 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:52,465 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1, 1, 1] [2018-07-25 08:57:52,465 INFO L415 AbstractCegarLoop]: === Iteration 248 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:52,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1812504313, now seen corresponding path program 245 times [2018-07-25 08:57:52,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 3486 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:52,776 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:52,776 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:57:52,776 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:57:52,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:57:52,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:57:52,777 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand 86 states. [2018-07-25 08:57:53,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:53,186 INFO L93 Difference]: Finished difference Result 258 states and 260 transitions. [2018-07-25 08:57:53,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:57:53,186 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:57:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:53,186 INFO L225 Difference]: With dead ends: 258 [2018-07-25 08:57:53,187 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:57:53,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:57:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:57:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:57:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:57:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 08:57:53,359 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 170 [2018-07-25 08:57:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:53,359 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 08:57:53,359 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:57:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 08:57:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:57:53,360 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:53,360 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1, 1, 1] [2018-07-25 08:57:53,360 INFO L415 AbstractCegarLoop]: === Iteration 249 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1504172755, now seen corresponding path program 246 times [2018-07-25 08:57:53,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 3486 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:53,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:53,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:57:53,665 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:57:53,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:57:53,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:57:53,665 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 86 states. [2018-07-25 08:57:53,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:53,846 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2018-07-25 08:57:53,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:57:53,846 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:57:53,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:53,847 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:57:53,847 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:57:53,847 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:57:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:57:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 08:57:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:57:53,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2018-07-25 08:57:53,993 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 170 [2018-07-25 08:57:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:53,993 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2018-07-25 08:57:53,994 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:57:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2018-07-25 08:57:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:57:53,994 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:53,994 INFO L354 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1] [2018-07-25 08:57:53,995 INFO L415 AbstractCegarLoop]: === Iteration 250 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:53,995 INFO L82 PathProgramCache]: Analyzing trace with hash 615223329, now seen corresponding path program 247 times [2018-07-25 08:57:53,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:54,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:54,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:57:54,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:57:54,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:57:54,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:57:54,482 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand 86 states. [2018-07-25 08:57:55,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:55,528 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2018-07-25 08:57:55,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:57:55,528 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 171 [2018-07-25 08:57:55,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:55,529 INFO L225 Difference]: With dead ends: 260 [2018-07-25 08:57:55,529 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:57:55,530 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:57:55,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:57:55,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 174. [2018-07-25 08:57:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:57:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 176 transitions. [2018-07-25 08:57:55,767 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 176 transitions. Word has length 171 [2018-07-25 08:57:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:55,767 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 176 transitions. [2018-07-25 08:57:55,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:57:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 176 transitions. [2018-07-25 08:57:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:57:55,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:55,768 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1, 1, 1] [2018-07-25 08:57:55,768 INFO L415 AbstractCegarLoop]: === Iteration 251 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:55,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1891992493, now seen corresponding path program 248 times [2018-07-25 08:57:55,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 3570 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:56,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:56,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:57:56,113 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:57:56,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:57:56,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:57:56,114 INFO L87 Difference]: Start difference. First operand 174 states and 176 transitions. Second operand 87 states. [2018-07-25 08:57:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:56,516 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2018-07-25 08:57:56,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:57:56,516 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-25 08:57:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:56,517 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:57:56,517 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:57:56,518 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:57:56,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:57:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:57:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:57:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-25 08:57:56,665 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 172 [2018-07-25 08:57:56,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:56,665 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-25 08:57:56,665 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:57:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-25 08:57:56,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:57:56,666 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:56,666 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1, 1, 1] [2018-07-25 08:57:56,666 INFO L415 AbstractCegarLoop]: === Iteration 252 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:56,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1434631097, now seen corresponding path program 249 times [2018-07-25 08:57:56,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 3570 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:56,996 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:56,996 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:57:56,996 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:57:56,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:57:56,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:57:56,997 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 87 states. [2018-07-25 08:57:57,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:57,185 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-07-25 08:57:57,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:57:57,185 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-25 08:57:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:57,186 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:57:57,186 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 08:57:57,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:57:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 08:57:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 08:57:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:57:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2018-07-25 08:57:57,336 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 172 [2018-07-25 08:57:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:57,336 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2018-07-25 08:57:57,336 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:57:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2018-07-25 08:57:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:57:57,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:57,337 INFO L354 BasicCegarLoop]: trace histogram [84, 84, 1, 1, 1, 1, 1] [2018-07-25 08:57:57,337 INFO L415 AbstractCegarLoop]: === Iteration 253 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:57,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1523952569, now seen corresponding path program 250 times [2018-07-25 08:57:57,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:57,825 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:57,825 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:57:57,826 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:57:57,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:57:57,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:57:57,826 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 87 states. [2018-07-25 08:57:58,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:58,817 INFO L93 Difference]: Finished difference Result 263 states and 265 transitions. [2018-07-25 08:57:58,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:57:58,817 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 173 [2018-07-25 08:57:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:58,818 INFO L225 Difference]: With dead ends: 263 [2018-07-25 08:57:58,818 INFO L226 Difference]: Without dead ends: 260 [2018-07-25 08:57:58,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:57:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-25 08:57:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 176. [2018-07-25 08:57:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:57:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions. [2018-07-25 08:57:58,955 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 173 [2018-07-25 08:57:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:58,955 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions. [2018-07-25 08:57:58,955 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:57:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions. [2018-07-25 08:57:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:57:58,955 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:58,955 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1, 1, 1] [2018-07-25 08:57:58,956 INFO L415 AbstractCegarLoop]: === Iteration 254 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:58,956 INFO L82 PathProgramCache]: Analyzing trace with hash 2049095, now seen corresponding path program 251 times [2018-07-25 08:57:58,956 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 3655 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:59,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:59,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:57:59,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:57:59,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:57:59,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:57:59,221 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand 88 states. [2018-07-25 08:57:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:59,633 INFO L93 Difference]: Finished difference Result 264 states and 266 transitions. [2018-07-25 08:57:59,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:57:59,633 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:57:59,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:59,634 INFO L225 Difference]: With dead ends: 264 [2018-07-25 08:57:59,634 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:57:59,634 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:57:59,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:57:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:57:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:57:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 08:57:59,773 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 174 [2018-07-25 08:57:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:59,773 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 08:57:59,773 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:57:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 08:57:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:57:59,774 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:59,774 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1, 1, 1] [2018-07-25 08:57:59,774 INFO L415 AbstractCegarLoop]: === Iteration 255 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:59,774 INFO L82 PathProgramCache]: Analyzing trace with hash -44067091, now seen corresponding path program 252 times [2018-07-25 08:57:59,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 3655 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:00,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:00,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:58:00,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:58:00,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:58:00,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:58:00,090 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 88 states. [2018-07-25 08:58:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:00,302 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2018-07-25 08:58:00,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:58:00,302 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:58:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:00,303 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:58:00,303 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:58:00,303 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:58:00,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:58:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 08:58:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:58:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2018-07-25 08:58:00,439 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 174 [2018-07-25 08:58:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:00,439 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2018-07-25 08:58:00,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:58:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2018-07-25 08:58:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 08:58:00,440 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:00,440 INFO L354 BasicCegarLoop]: trace histogram [85, 85, 1, 1, 1, 1, 1] [2018-07-25 08:58:00,440 INFO L415 AbstractCegarLoop]: === Iteration 256 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:00,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1366141343, now seen corresponding path program 253 times [2018-07-25 08:58:00,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:00,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:00,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:58:00,883 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:58:00,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:58:00,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:58:00,884 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand 88 states. [2018-07-25 08:58:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:01,876 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2018-07-25 08:58:01,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:58:01,877 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 175 [2018-07-25 08:58:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:01,878 INFO L225 Difference]: With dead ends: 266 [2018-07-25 08:58:01,878 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:58:01,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:58:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:58:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 178. [2018-07-25 08:58:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:58:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2018-07-25 08:58:02,026 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 175 [2018-07-25 08:58:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:02,026 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2018-07-25 08:58:02,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:58:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2018-07-25 08:58:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:58:02,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:02,027 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1, 1, 1] [2018-07-25 08:58:02,029 INFO L415 AbstractCegarLoop]: === Iteration 257 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:02,029 INFO L82 PathProgramCache]: Analyzing trace with hash 599229805, now seen corresponding path program 254 times [2018-07-25 08:58:02,029 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 3741 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:02,329 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:02,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:58:02,329 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:58:02,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:58:02,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:58:02,331 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 89 states. [2018-07-25 08:58:02,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:02,750 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2018-07-25 08:58:02,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:58:02,750 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-25 08:58:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:02,750 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:58:02,751 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:58:02,752 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:58:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:58:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:58:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:58:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 08:58:02,892 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 176 [2018-07-25 08:58:02,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:02,892 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 08:58:02,892 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:58:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 08:58:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:58:02,893 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:02,893 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1, 1, 1] [2018-07-25 08:58:02,893 INFO L415 AbstractCegarLoop]: === Iteration 258 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:02,894 INFO L82 PathProgramCache]: Analyzing trace with hash -830371961, now seen corresponding path program 255 times [2018-07-25 08:58:02,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 3741 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:03,281 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:03,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:58:03,281 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:58:03,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:58:03,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:58:03,282 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 89 states. [2018-07-25 08:58:03,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:03,461 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-07-25 08:58:03,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:58:03,461 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-25 08:58:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:03,462 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:58:03,462 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:58:03,463 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:58:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:58:03,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 08:58:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:58:03,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2018-07-25 08:58:03,709 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 176 [2018-07-25 08:58:03,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:03,710 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2018-07-25 08:58:03,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:58:03,710 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2018-07-25 08:58:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:58:03,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:03,711 INFO L354 BasicCegarLoop]: trace histogram [86, 86, 1, 1, 1, 1, 1] [2018-07-25 08:58:03,711 INFO L415 AbstractCegarLoop]: === Iteration 259 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:03,711 INFO L82 PathProgramCache]: Analyzing trace with hash 28211463, now seen corresponding path program 256 times [2018-07-25 08:58:03,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:04,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:04,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:58:04,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:58:04,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:58:04,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:58:04,235 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 89 states. [2018-07-25 08:58:05,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:05,312 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2018-07-25 08:58:05,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:58:05,312 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 177 [2018-07-25 08:58:05,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:05,312 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:58:05,312 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 08:58:05,313 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:58:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 08:58:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 180. [2018-07-25 08:58:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:58:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2018-07-25 08:58:05,474 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 177 [2018-07-25 08:58:05,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:05,475 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2018-07-25 08:58:05,475 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:58:05,475 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2018-07-25 08:58:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:58:05,475 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:05,475 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1, 1, 1] [2018-07-25 08:58:05,475 INFO L415 AbstractCegarLoop]: === Iteration 260 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:05,476 INFO L82 PathProgramCache]: Analyzing trace with hash 874493831, now seen corresponding path program 257 times [2018-07-25 08:58:05,476 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3828 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:05,823 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:05,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:58:05,823 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:58:05,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:58:05,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:58:05,824 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand 90 states. [2018-07-25 08:58:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:06,332 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2018-07-25 08:58:06,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:58:06,332 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:58:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:06,332 INFO L225 Difference]: With dead ends: 270 [2018-07-25 08:58:06,332 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:58:06,333 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:58:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:58:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:58:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:58:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-25 08:58:06,489 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 178 [2018-07-25 08:58:06,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:06,489 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-25 08:58:06,490 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:58:06,490 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-25 08:58:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:58:06,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:06,490 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1, 1, 1] [2018-07-25 08:58:06,490 INFO L415 AbstractCegarLoop]: === Iteration 261 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:06,491 INFO L82 PathProgramCache]: Analyzing trace with hash -493487955, now seen corresponding path program 258 times [2018-07-25 08:58:06,491 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3828 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:06,842 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:06,842 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:58:06,843 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:58:06,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:58:06,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:58:06,844 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 90 states. [2018-07-25 08:58:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:07,061 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2018-07-25 08:58:07,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:58:07,061 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:58:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:07,062 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:58:07,062 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 08:58:07,062 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:58:07,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 08:58:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 08:58:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:58:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2018-07-25 08:58:07,220 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 178 [2018-07-25 08:58:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:07,221 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2018-07-25 08:58:07,221 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:58:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2018-07-25 08:58:07,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:58:07,221 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:07,221 INFO L354 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1] [2018-07-25 08:58:07,221 INFO L415 AbstractCegarLoop]: === Iteration 262 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:07,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1881681057, now seen corresponding path program 259 times [2018-07-25 08:58:07,222 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:07,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:07,749 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:58:07,749 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:58:07,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:58:07,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:58:07,750 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand 90 states. [2018-07-25 08:58:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:08,902 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2018-07-25 08:58:08,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:58:08,902 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 179 [2018-07-25 08:58:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:08,903 INFO L225 Difference]: With dead ends: 272 [2018-07-25 08:58:08,903 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:58:08,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:58:08,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:58:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 182. [2018-07-25 08:58:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:58:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2018-07-25 08:58:09,069 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 179 [2018-07-25 08:58:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:09,069 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 184 transitions. [2018-07-25 08:58:09,070 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:58:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 184 transitions. [2018-07-25 08:58:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:58:09,070 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:09,070 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1, 1, 1] [2018-07-25 08:58:09,070 INFO L415 AbstractCegarLoop]: === Iteration 263 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:09,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1797490899, now seen corresponding path program 260 times [2018-07-25 08:58:09,070 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 3916 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:09,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:09,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:58:09,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:58:09,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:58:09,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:58:09,477 INFO L87 Difference]: Start difference. First operand 182 states and 184 transitions. Second operand 91 states. [2018-07-25 08:58:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:09,959 INFO L93 Difference]: Finished difference Result 273 states and 275 transitions. [2018-07-25 08:58:09,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:58:09,959 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-25 08:58:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:09,960 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:58:09,960 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:58:09,961 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:58:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:58:10,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:58:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:58:10,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 08:58:10,120 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 180 [2018-07-25 08:58:10,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:10,120 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 08:58:10,120 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:58:10,120 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 08:58:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:58:10,121 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:10,121 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1, 1, 1] [2018-07-25 08:58:10,121 INFO L415 AbstractCegarLoop]: === Iteration 264 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:10,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1255253305, now seen corresponding path program 261 times [2018-07-25 08:58:10,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 3916 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:10,477 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:10,477 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:58:10,478 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:58:10,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:58:10,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:58:10,478 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 91 states. [2018-07-25 08:58:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:10,699 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2018-07-25 08:58:10,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:58:10,699 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-25 08:58:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:10,699 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:58:10,699 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:58:10,700 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:58:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:58:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 08:58:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:58:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2018-07-25 08:58:10,861 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 180 [2018-07-25 08:58:10,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:10,861 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2018-07-25 08:58:10,861 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:58:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2018-07-25 08:58:10,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 08:58:10,862 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:10,862 INFO L354 BasicCegarLoop]: trace histogram [88, 88, 1, 1, 1, 1, 1] [2018-07-25 08:58:10,862 INFO L415 AbstractCegarLoop]: === Iteration 265 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:10,862 INFO L82 PathProgramCache]: Analyzing trace with hash -258208313, now seen corresponding path program 262 times [2018-07-25 08:58:10,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:11,431 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:11,431 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:58:11,431 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:58:11,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:58:11,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:58:11,432 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 91 states. [2018-07-25 08:58:12,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:12,615 INFO L93 Difference]: Finished difference Result 275 states and 277 transitions. [2018-07-25 08:58:12,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:58:12,615 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 181 [2018-07-25 08:58:12,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:12,616 INFO L225 Difference]: With dead ends: 275 [2018-07-25 08:58:12,616 INFO L226 Difference]: Without dead ends: 272 [2018-07-25 08:58:12,617 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:58:12,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-07-25 08:58:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 184. [2018-07-25 08:58:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:58:12,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 186 transitions. [2018-07-25 08:58:12,788 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 186 transitions. Word has length 181 [2018-07-25 08:58:12,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:12,788 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 186 transitions. [2018-07-25 08:58:12,788 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:58:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 186 transitions. [2018-07-25 08:58:12,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:58:12,789 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:12,789 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1, 1, 1] [2018-07-25 08:58:12,789 INFO L415 AbstractCegarLoop]: === Iteration 266 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:12,789 INFO L82 PathProgramCache]: Analyzing trace with hash 585415367, now seen corresponding path program 263 times [2018-07-25 08:58:12,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 4005 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:13,147 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:13,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:58:13,147 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:58:13,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:58:13,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:58:13,148 INFO L87 Difference]: Start difference. First operand 184 states and 186 transitions. Second operand 92 states. [2018-07-25 08:58:13,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:13,712 INFO L93 Difference]: Finished difference Result 276 states and 278 transitions. [2018-07-25 08:58:13,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:58:13,712 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:58:13,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:13,713 INFO L225 Difference]: With dead ends: 276 [2018-07-25 08:58:13,713 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:58:13,713 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:58:13,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:58:13,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:58:13,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:58:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 08:58:13,877 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 182 [2018-07-25 08:58:13,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:13,877 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 08:58:13,877 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:58:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 08:58:13,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:58:13,877 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:13,878 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1, 1, 1] [2018-07-25 08:58:13,878 INFO L415 AbstractCegarLoop]: === Iteration 267 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:13,878 INFO L82 PathProgramCache]: Analyzing trace with hash 214911597, now seen corresponding path program 264 times [2018-07-25 08:58:13,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 4005 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:14,260 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:14,260 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:58:14,260 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:58:14,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:58:14,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:58:14,261 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 92 states. [2018-07-25 08:58:14,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:14,472 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2018-07-25 08:58:14,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:58:14,472 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:58:14,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:14,473 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:58:14,473 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:58:14,474 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:58:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:58:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 08:58:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:58:14,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2018-07-25 08:58:14,620 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 182 [2018-07-25 08:58:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:14,620 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2018-07-25 08:58:14,620 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:58:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2018-07-25 08:58:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:58:14,620 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:14,620 INFO L354 BasicCegarLoop]: trace histogram [89, 89, 1, 1, 1, 1, 1] [2018-07-25 08:58:14,621 INFO L415 AbstractCegarLoop]: === Iteration 268 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:14,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1927736607, now seen corresponding path program 265 times [2018-07-25 08:58:14,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:15,092 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:15,092 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:58:15,092 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:58:15,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:58:15,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:58:15,093 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand 92 states. [2018-07-25 08:58:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:16,178 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2018-07-25 08:58:16,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:58:16,179 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 183 [2018-07-25 08:58:16,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:16,179 INFO L225 Difference]: With dead ends: 278 [2018-07-25 08:58:16,179 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:58:16,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:58:16,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:58:16,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 186. [2018-07-25 08:58:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:58:16,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2018-07-25 08:58:16,333 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 183 [2018-07-25 08:58:16,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:16,333 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions. [2018-07-25 08:58:16,333 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:58:16,333 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions. [2018-07-25 08:58:16,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:58:16,334 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:16,334 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1, 1, 1] [2018-07-25 08:58:16,334 INFO L415 AbstractCegarLoop]: === Iteration 269 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:16,334 INFO L82 PathProgramCache]: Analyzing trace with hash 369645805, now seen corresponding path program 266 times [2018-07-25 08:58:16,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 4095 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:16,681 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:16,681 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:58:16,681 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:58:16,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:58:16,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:58:16,682 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand 93 states. [2018-07-25 08:58:17,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:17,109 INFO L93 Difference]: Finished difference Result 279 states and 281 transitions. [2018-07-25 08:58:17,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:58:17,109 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-25 08:58:17,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:17,110 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:58:17,110 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:58:17,110 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:58:17,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:58:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:58:17,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:58:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-25 08:58:17,259 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 184 [2018-07-25 08:58:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:17,260 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-25 08:58:17,260 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:58:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-25 08:58:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:58:17,260 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:17,260 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1, 1, 1] [2018-07-25 08:58:17,260 INFO L415 AbstractCegarLoop]: === Iteration 270 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1768930823, now seen corresponding path program 267 times [2018-07-25 08:58:17,261 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 4095 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:17,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:17,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:58:17,597 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:58:17,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:58:17,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:58:17,598 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 93 states. [2018-07-25 08:58:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:17,800 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-07-25 08:58:17,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:58:17,800 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-25 08:58:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:17,801 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:58:17,801 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 08:58:17,801 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:58:17,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 08:58:17,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 08:58:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:58:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2018-07-25 08:58:17,956 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 184 [2018-07-25 08:58:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:17,956 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2018-07-25 08:58:17,956 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:58:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2018-07-25 08:58:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:58:17,956 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:17,957 INFO L354 BasicCegarLoop]: trace histogram [90, 90, 1, 1, 1, 1, 1] [2018-07-25 08:58:17,957 INFO L415 AbstractCegarLoop]: === Iteration 271 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:17,957 INFO L82 PathProgramCache]: Analyzing trace with hash -997780857, now seen corresponding path program 268 times [2018-07-25 08:58:17,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:18,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:18,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:58:18,447 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:58:18,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:58:18,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:58:18,448 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 93 states. [2018-07-25 08:58:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:19,702 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2018-07-25 08:58:19,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:58:19,702 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 185 [2018-07-25 08:58:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:19,703 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:58:19,703 INFO L226 Difference]: Without dead ends: 278 [2018-07-25 08:58:19,704 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:58:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-25 08:58:19,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 188. [2018-07-25 08:58:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:58:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2018-07-25 08:58:19,880 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 185 [2018-07-25 08:58:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:19,880 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 190 transitions. [2018-07-25 08:58:19,880 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:58:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 190 transitions. [2018-07-25 08:58:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:58:19,881 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:19,881 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1, 1, 1] [2018-07-25 08:58:19,881 INFO L415 AbstractCegarLoop]: === Iteration 272 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:19,881 INFO L82 PathProgramCache]: Analyzing trace with hash -866497017, now seen corresponding path program 269 times [2018-07-25 08:58:19,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 4186 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:20,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:20,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:58:20,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:58:20,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:58:20,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:58:20,355 INFO L87 Difference]: Start difference. First operand 188 states and 190 transitions. Second operand 94 states. [2018-07-25 08:58:20,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:20,919 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2018-07-25 08:58:20,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:58:20,919 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:58:20,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:20,919 INFO L225 Difference]: With dead ends: 282 [2018-07-25 08:58:20,919 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:58:20,920 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:58:20,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:58:21,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:58:21,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:58:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 08:58:21,093 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 186 [2018-07-25 08:58:21,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:21,093 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 08:58:21,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:58:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 08:58:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:58:21,094 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:21,094 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1, 1, 1] [2018-07-25 08:58:21,094 INFO L415 AbstractCegarLoop]: === Iteration 273 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:21,094 INFO L82 PathProgramCache]: Analyzing trace with hash -438334419, now seen corresponding path program 270 times [2018-07-25 08:58:21,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 4186 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:21,536 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:21,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:58:21,536 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:58:21,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:58:21,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:58:21,537 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 94 states. [2018-07-25 08:58:21,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:21,753 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2018-07-25 08:58:21,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:58:21,753 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:58:21,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:21,754 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:58:21,754 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:58:21,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:58:21,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:58:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 08:58:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:58:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 189 transitions. [2018-07-25 08:58:21,926 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 189 transitions. Word has length 186 [2018-07-25 08:58:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:21,927 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 189 transitions. [2018-07-25 08:58:21,927 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:58:21,927 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 189 transitions. [2018-07-25 08:58:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 08:58:21,927 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:21,927 INFO L354 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1] [2018-07-25 08:58:21,927 INFO L415 AbstractCegarLoop]: === Iteration 274 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:21,928 INFO L82 PathProgramCache]: Analyzing trace with hash -703526623, now seen corresponding path program 271 times [2018-07-25 08:58:21,928 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:22,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:22,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:58:22,503 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:58:22,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:58:22,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:58:22,503 INFO L87 Difference]: Start difference. First operand 188 states and 189 transitions. Second operand 94 states. [2018-07-25 08:58:23,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:23,777 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2018-07-25 08:58:23,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:58:23,777 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 187 [2018-07-25 08:58:23,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:23,778 INFO L225 Difference]: With dead ends: 284 [2018-07-25 08:58:23,778 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:58:23,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:58:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:58:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 190. [2018-07-25 08:58:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:58:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2018-07-25 08:58:23,960 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 187 [2018-07-25 08:58:23,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:23,960 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2018-07-25 08:58:23,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:58:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2018-07-25 08:58:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:58:23,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:23,961 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1, 1, 1] [2018-07-25 08:58:23,961 INFO L415 AbstractCegarLoop]: === Iteration 275 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:23,961 INFO L82 PathProgramCache]: Analyzing trace with hash -334550355, now seen corresponding path program 272 times [2018-07-25 08:58:23,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 4278 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:24,356 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:24,357 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:58:24,357 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:58:24,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:58:24,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:58:24,358 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 95 states. [2018-07-25 08:58:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:24,907 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2018-07-25 08:58:24,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:58:24,907 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-25 08:58:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:24,907 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:58:24,908 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:58:24,908 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:58:24,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:58:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:58:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:58:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 08:58:25,084 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 188 [2018-07-25 08:58:25,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:25,084 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 08:58:25,084 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:58:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 08:58:25,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:58:25,085 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:25,085 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1, 1, 1] [2018-07-25 08:58:25,085 INFO L415 AbstractCegarLoop]: === Iteration 276 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:25,085 INFO L82 PathProgramCache]: Analyzing trace with hash 53588295, now seen corresponding path program 273 times [2018-07-25 08:58:25,085 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 4278 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:25,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:25,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:58:25,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:58:25,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:58:25,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:58:25,521 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 95 states. [2018-07-25 08:58:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:25,740 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2018-07-25 08:58:25,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:58:25,740 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-25 08:58:25,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:25,741 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:58:25,741 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:58:25,741 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:58:25,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:58:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 08:58:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:58:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2018-07-25 08:58:25,915 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 188 [2018-07-25 08:58:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:25,916 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2018-07-25 08:58:25,916 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:58:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2018-07-25 08:58:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:58:25,916 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:25,916 INFO L354 BasicCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1] [2018-07-25 08:58:25,917 INFO L415 AbstractCegarLoop]: === Iteration 277 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:25,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1661175623, now seen corresponding path program 274 times [2018-07-25 08:58:25,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:26,504 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:26,504 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:58:26,505 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:58:26,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:58:26,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:58:26,505 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 95 states. [2018-07-25 08:58:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:27,674 INFO L93 Difference]: Finished difference Result 287 states and 289 transitions. [2018-07-25 08:58:27,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:58:27,674 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 189 [2018-07-25 08:58:27,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:27,675 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:58:27,675 INFO L226 Difference]: Without dead ends: 284 [2018-07-25 08:58:27,676 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:58:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-07-25 08:58:27,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 192. [2018-07-25 08:58:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:58:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 194 transitions. [2018-07-25 08:58:27,857 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 194 transitions. Word has length 189 [2018-07-25 08:58:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:27,857 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 194 transitions. [2018-07-25 08:58:27,858 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:58:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 194 transitions. [2018-07-25 08:58:27,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:58:27,858 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:27,858 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1, 1, 1] [2018-07-25 08:58:27,858 INFO L415 AbstractCegarLoop]: === Iteration 278 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:27,858 INFO L82 PathProgramCache]: Analyzing trace with hash -43224761, now seen corresponding path program 275 times [2018-07-25 08:58:27,858 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 4371 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:28,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:28,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:58:28,195 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:58:28,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:58:28,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:58:28,196 INFO L87 Difference]: Start difference. First operand 192 states and 194 transitions. Second operand 96 states. [2018-07-25 08:58:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:28,753 INFO L93 Difference]: Finished difference Result 288 states and 290 transitions. [2018-07-25 08:58:28,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:58:28,754 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:58:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:28,754 INFO L225 Difference]: With dead ends: 288 [2018-07-25 08:58:28,754 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:58:28,755 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:58:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:58:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:58:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:58:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-25 08:58:28,937 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 190 [2018-07-25 08:58:28,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:28,937 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-25 08:58:28,937 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:58:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-25 08:58:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:58:28,937 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:28,937 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1, 1, 1] [2018-07-25 08:58:28,937 INFO L415 AbstractCegarLoop]: === Iteration 279 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:28,938 INFO L82 PathProgramCache]: Analyzing trace with hash -895828499, now seen corresponding path program 276 times [2018-07-25 08:58:28,938 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 4371 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:29,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:29,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:58:29,292 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:58:29,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:58:29,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:58:29,293 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 96 states. [2018-07-25 08:58:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:29,534 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2018-07-25 08:58:29,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:58:29,534 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:58:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:29,535 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:58:29,535 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 08:58:29,535 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:58:29,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 08:58:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 08:58:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:58:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2018-07-25 08:58:29,714 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 190 [2018-07-25 08:58:29,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:29,714 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2018-07-25 08:58:29,714 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:58:29,714 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2018-07-25 08:58:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:58:29,715 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:29,715 INFO L354 BasicCegarLoop]: trace histogram [93, 93, 1, 1, 1, 1, 1] [2018-07-25 08:58:29,715 INFO L415 AbstractCegarLoop]: === Iteration 280 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:29,715 INFO L82 PathProgramCache]: Analyzing trace with hash -2000941215, now seen corresponding path program 277 times [2018-07-25 08:58:29,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:30,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:30,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:30,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:58:30,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:58:30,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:58:30,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=8931, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:58:30,344 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand 96 states. [2018-07-25 08:58:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:31,633 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2018-07-25 08:58:31,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:58:31,634 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 191 [2018-07-25 08:58:31,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:31,634 INFO L225 Difference]: With dead ends: 290 [2018-07-25 08:58:31,634 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:58:31,635 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=8931, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:58:31,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:58:31,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 194. [2018-07-25 08:58:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:58:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions. [2018-07-25 08:58:31,822 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 191 [2018-07-25 08:58:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:31,822 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 196 transitions. [2018-07-25 08:58:31,822 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:58:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 196 transitions. [2018-07-25 08:58:31,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:58:31,822 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:31,823 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1, 1, 1] [2018-07-25 08:58:31,823 INFO L415 AbstractCegarLoop]: === Iteration 281 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:31,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1899697043, now seen corresponding path program 278 times [2018-07-25 08:58:31,823 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 4465 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:32,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:32,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:58:32,263 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:58:32,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:58:32,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:58:32,265 INFO L87 Difference]: Start difference. First operand 194 states and 196 transitions. Second operand 97 states. [2018-07-25 08:58:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:32,844 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2018-07-25 08:58:32,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:58:32,844 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-25 08:58:32,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:32,844 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:58:32,844 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:58:32,845 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:58:32,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:58:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:58:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:58:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 08:58:33,027 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 192 [2018-07-25 08:58:33,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:33,027 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 08:58:33,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:58:33,027 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 08:58:33,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:58:33,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:33,028 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1, 1, 1] [2018-07-25 08:58:33,028 INFO L415 AbstractCegarLoop]: === Iteration 282 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:33,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1734358151, now seen corresponding path program 279 times [2018-07-25 08:58:33,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 4465 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:33,486 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:33,486 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:58:33,486 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:58:33,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:58:33,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:58:33,487 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 97 states. [2018-07-25 08:58:33,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:33,723 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2018-07-25 08:58:33,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:58:33,724 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-25 08:58:33,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:33,724 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:58:33,724 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:58:33,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:58:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:58:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 08:58:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:58:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2018-07-25 08:58:33,904 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 192 [2018-07-25 08:58:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:33,905 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2018-07-25 08:58:33,905 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:58:33,905 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2018-07-25 08:58:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 08:58:33,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:33,905 INFO L354 BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1] [2018-07-25 08:58:33,905 INFO L415 AbstractCegarLoop]: === Iteration 283 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:33,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2069533689, now seen corresponding path program 280 times [2018-07-25 08:58:33,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:34,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:34,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:58:34,522 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:58:34,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:58:34,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:58:34,522 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 97 states. [2018-07-25 08:58:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:35,854 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2018-07-25 08:58:35,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:58:35,854 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 193 [2018-07-25 08:58:35,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:35,855 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:58:35,855 INFO L226 Difference]: Without dead ends: 290 [2018-07-25 08:58:35,856 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:58:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-07-25 08:58:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 196. [2018-07-25 08:58:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:58:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2018-07-25 08:58:36,045 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 193 [2018-07-25 08:58:36,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:36,046 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2018-07-25 08:58:36,046 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:58:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2018-07-25 08:58:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:58:36,046 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:36,046 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1] [2018-07-25 08:58:36,046 INFO L415 AbstractCegarLoop]: === Iteration 284 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash 268903559, now seen corresponding path program 281 times [2018-07-25 08:58:36,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 4560 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:36,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:36,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:58:36,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:58:36,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:58:36,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:58:36,517 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand 98 states. [2018-07-25 08:58:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:37,126 INFO L93 Difference]: Finished difference Result 294 states and 296 transitions. [2018-07-25 08:58:37,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:58:37,127 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:58:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:37,127 INFO L225 Difference]: With dead ends: 294 [2018-07-25 08:58:37,127 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:58:37,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:58:37,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:58:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:58:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:58:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 08:58:37,313 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 194 [2018-07-25 08:58:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:37,313 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 08:58:37,313 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:58:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 08:58:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:58:37,314 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:37,314 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1] [2018-07-25 08:58:37,314 INFO L415 AbstractCegarLoop]: === Iteration 285 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1255464877, now seen corresponding path program 282 times [2018-07-25 08:58:37,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 4560 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:37,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:37,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:58:37,743 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:58:37,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:58:37,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:58:37,744 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 98 states. [2018-07-25 08:58:37,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:37,996 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2018-07-25 08:58:37,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:58:37,996 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:58:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:37,997 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:58:37,997 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:58:37,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:58:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:58:38,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 08:58:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:58:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2018-07-25 08:58:38,182 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 194 [2018-07-25 08:58:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:38,183 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2018-07-25 08:58:38,183 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:58:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2018-07-25 08:58:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:58:38,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:38,183 INFO L354 BasicCegarLoop]: trace histogram [95, 95, 1, 1, 1, 1, 1] [2018-07-25 08:58:38,183 INFO L415 AbstractCegarLoop]: === Iteration 286 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:38,184 INFO L82 PathProgramCache]: Analyzing trace with hash 264644001, now seen corresponding path program 283 times [2018-07-25 08:58:38,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:38,840 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:38,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:58:38,840 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:58:38,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:58:38,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=9313, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:58:38,841 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand 98 states. [2018-07-25 08:58:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:40,242 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2018-07-25 08:58:40,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:58:40,243 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 195 [2018-07-25 08:58:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:40,243 INFO L225 Difference]: With dead ends: 296 [2018-07-25 08:58:40,243 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:58:40,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=9313, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:58:40,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:58:40,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 198. [2018-07-25 08:58:40,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:58:40,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2018-07-25 08:58:40,439 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 195 [2018-07-25 08:58:40,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:40,440 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2018-07-25 08:58:40,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:58:40,440 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2018-07-25 08:58:40,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:58:40,440 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:40,440 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1, 1, 1] [2018-07-25 08:58:40,440 INFO L415 AbstractCegarLoop]: === Iteration 287 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:40,441 INFO L82 PathProgramCache]: Analyzing trace with hash -386032083, now seen corresponding path program 284 times [2018-07-25 08:58:40,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 4656 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:40,905 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:40,905 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:58:40,905 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:58:40,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:58:40,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:58:40,906 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 99 states. [2018-07-25 08:58:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:41,512 INFO L93 Difference]: Finished difference Result 297 states and 299 transitions. [2018-07-25 08:58:41,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:58:41,512 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-25 08:58:41,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:41,512 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:58:41,512 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:58:41,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:58:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:58:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:58:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:58:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-25 08:58:41,680 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 196 [2018-07-25 08:58:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:41,680 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-25 08:58:41,680 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:58:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-25 08:58:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:58:41,681 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:41,681 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1, 1, 1] [2018-07-25 08:58:41,681 INFO L415 AbstractCegarLoop]: === Iteration 288 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:41,681 INFO L82 PathProgramCache]: Analyzing trace with hash 132597703, now seen corresponding path program 285 times [2018-07-25 08:58:41,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 4656 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:42,162 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:42,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:58:42,162 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:58:42,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:58:42,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:58:42,163 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 99 states. [2018-07-25 08:58:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:42,408 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-07-25 08:58:42,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:58:42,408 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-25 08:58:42,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:42,408 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:58:42,408 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 08:58:42,409 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:58:42,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 08:58:42,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 08:58:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:58:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2018-07-25 08:58:42,600 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 196 [2018-07-25 08:58:42,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:42,600 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2018-07-25 08:58:42,600 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:58:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2018-07-25 08:58:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:58:42,600 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:42,600 INFO L354 BasicCegarLoop]: trace histogram [96, 96, 1, 1, 1, 1, 1] [2018-07-25 08:58:42,601 INFO L415 AbstractCegarLoop]: === Iteration 289 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:42,601 INFO L82 PathProgramCache]: Analyzing trace with hash -184500025, now seen corresponding path program 286 times [2018-07-25 08:58:42,601 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:43,232 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:43,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:58:43,232 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:58:43,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:58:43,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:58:43,233 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 99 states. [2018-07-25 08:58:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:44,514 INFO L93 Difference]: Finished difference Result 299 states and 301 transitions. [2018-07-25 08:58:44,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:58:44,514 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 197 [2018-07-25 08:58:44,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:44,515 INFO L225 Difference]: With dead ends: 299 [2018-07-25 08:58:44,515 INFO L226 Difference]: Without dead ends: 296 [2018-07-25 08:58:44,516 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:58:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-07-25 08:58:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 200. [2018-07-25 08:58:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:58:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2018-07-25 08:58:44,829 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 197 [2018-07-25 08:58:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:44,829 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2018-07-25 08:58:44,829 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:58:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2018-07-25 08:58:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:58:44,830 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:44,830 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1, 1, 1] [2018-07-25 08:58:44,830 INFO L415 AbstractCegarLoop]: === Iteration 290 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:44,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1424595001, now seen corresponding path program 287 times [2018-07-25 08:58:44,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 4753 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:45,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:45,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:58:45,352 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:58:45,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:58:45,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:58:45,353 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand 100 states. [2018-07-25 08:58:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:46,001 INFO L93 Difference]: Finished difference Result 300 states and 302 transitions. [2018-07-25 08:58:46,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:58:46,002 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:58:46,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:46,002 INFO L225 Difference]: With dead ends: 300 [2018-07-25 08:58:46,002 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:58:46,003 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:58:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:58:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:58:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:58:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 08:58:46,195 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 198 [2018-07-25 08:58:46,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:46,196 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 08:58:46,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:58:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 08:58:46,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:58:46,196 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:46,196 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1, 1, 1] [2018-07-25 08:58:46,196 INFO L415 AbstractCegarLoop]: === Iteration 291 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:46,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1768026477, now seen corresponding path program 288 times [2018-07-25 08:58:46,197 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 4753 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:46,669 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:46,669 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:58:46,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:58:46,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:58:46,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:58:46,670 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 100 states. [2018-07-25 08:58:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:46,939 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2018-07-25 08:58:46,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:58:46,939 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:58:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:46,940 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:58:46,940 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:58:46,940 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:58:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:58:47,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 08:58:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:58:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2018-07-25 08:58:47,119 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 198 [2018-07-25 08:58:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:47,119 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2018-07-25 08:58:47,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:58:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2018-07-25 08:58:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 08:58:47,120 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:47,120 INFO L354 BasicCegarLoop]: trace histogram [97, 97, 1, 1, 1, 1, 1] [2018-07-25 08:58:47,120 INFO L415 AbstractCegarLoop]: === Iteration 292 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:47,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1025815583, now seen corresponding path program 289 times [2018-07-25 08:58:47,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:47,834 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:47,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:58:47,835 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:58:47,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:58:47,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=9703, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:58:47,835 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand 100 states. [2018-07-25 08:58:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:49,278 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2018-07-25 08:58:49,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:58:49,278 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 199 [2018-07-25 08:58:49,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:49,279 INFO L225 Difference]: With dead ends: 302 [2018-07-25 08:58:49,279 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:58:49,279 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=9703, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:58:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:58:49,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 202. [2018-07-25 08:58:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:58:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 204 transitions. [2018-07-25 08:58:49,464 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 204 transitions. Word has length 199 [2018-07-25 08:58:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:49,464 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 204 transitions. [2018-07-25 08:58:49,464 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:58:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 204 transitions. [2018-07-25 08:58:49,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:58:49,464 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:49,464 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1, 1, 1] [2018-07-25 08:58:49,465 INFO L415 AbstractCegarLoop]: === Iteration 293 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:49,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1735573523, now seen corresponding path program 290 times [2018-07-25 08:58:49,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 4851 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:49,848 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:49,848 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:58:49,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:58:49,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:58:49,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:58:49,850 INFO L87 Difference]: Start difference. First operand 202 states and 204 transitions. Second operand 101 states. [2018-07-25 08:58:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:50,427 INFO L93 Difference]: Finished difference Result 303 states and 305 transitions. [2018-07-25 08:58:50,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:58:50,427 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-25 08:58:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:50,428 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:58:50,428 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:58:50,429 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:58:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:58:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:58:50,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:58:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 08:58:50,602 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 200 [2018-07-25 08:58:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:50,602 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 08:58:50,602 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:58:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 08:58:50,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:58:50,603 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:50,603 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1, 1, 1] [2018-07-25 08:58:50,603 INFO L415 AbstractCegarLoop]: === Iteration 294 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:50,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1548555513, now seen corresponding path program 291 times [2018-07-25 08:58:50,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 4851 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:51,048 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:51,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:58:51,048 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:58:51,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:58:51,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:58:51,050 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 101 states. [2018-07-25 08:58:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:51,314 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2018-07-25 08:58:51,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:58:51,314 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-25 08:58:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:51,314 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:58:51,314 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:58:51,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:58:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:58:51,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 08:58:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:58:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2018-07-25 08:58:51,514 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 200 [2018-07-25 08:58:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:51,514 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2018-07-25 08:58:51,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:58:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2018-07-25 08:58:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:58:51,515 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:51,515 INFO L354 BasicCegarLoop]: trace histogram [98, 98, 1, 1, 1, 1, 1] [2018-07-25 08:58:51,515 INFO L415 AbstractCegarLoop]: === Iteration 295 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:51,515 INFO L82 PathProgramCache]: Analyzing trace with hash -760642169, now seen corresponding path program 292 times [2018-07-25 08:58:51,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:52,236 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:52,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:58:52,237 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:58:52,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:58:52,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:58:52,237 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 101 states. [2018-07-25 08:58:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:53,687 INFO L93 Difference]: Finished difference Result 305 states and 307 transitions. [2018-07-25 08:58:53,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:58:53,687 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 201 [2018-07-25 08:58:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:53,687 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:58:53,687 INFO L226 Difference]: Without dead ends: 302 [2018-07-25 08:58:53,688 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:58:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-07-25 08:58:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 204. [2018-07-25 08:58:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:58:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 206 transitions. [2018-07-25 08:58:53,893 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 206 transitions. Word has length 201 [2018-07-25 08:58:53,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:53,894 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 206 transitions. [2018-07-25 08:58:53,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:58:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 206 transitions. [2018-07-25 08:58:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:58:53,894 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:53,894 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1, 1, 1] [2018-07-25 08:58:53,894 INFO L415 AbstractCegarLoop]: === Iteration 296 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:53,895 INFO L82 PathProgramCache]: Analyzing trace with hash -2105132281, now seen corresponding path program 293 times [2018-07-25 08:58:53,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 4950 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:54,358 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:54,358 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:58:54,359 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:58:54,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:58:54,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:58:54,360 INFO L87 Difference]: Start difference. First operand 204 states and 206 transitions. Second operand 102 states. [2018-07-25 08:58:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:54,918 INFO L93 Difference]: Finished difference Result 306 states and 308 transitions. [2018-07-25 08:58:54,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:58:54,918 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:58:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:54,919 INFO L225 Difference]: With dead ends: 306 [2018-07-25 08:58:54,919 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:58:54,919 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:58:54,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:58:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:58:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:58:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-25 08:58:55,122 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 202 [2018-07-25 08:58:55,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:55,122 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-25 08:58:55,122 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:58:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-25 08:58:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:58:55,122 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:55,123 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1, 1, 1] [2018-07-25 08:58:55,123 INFO L415 AbstractCegarLoop]: === Iteration 297 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:55,123 INFO L82 PathProgramCache]: Analyzing trace with hash -602541267, now seen corresponding path program 294 times [2018-07-25 08:58:55,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 4950 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:55,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:55,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:58:55,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:58:55,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:58:55,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:58:55,683 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 102 states. [2018-07-25 08:58:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:55,919 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2018-07-25 08:58:55,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:58:55,919 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:58:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:55,920 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:58:55,920 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 08:58:55,920 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:58:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 08:58:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 08:58:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:58:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2018-07-25 08:58:56,098 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 202 [2018-07-25 08:58:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:56,098 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2018-07-25 08:58:56,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:58:56,098 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2018-07-25 08:58:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:58:56,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:56,099 INFO L354 BasicCegarLoop]: trace histogram [99, 99, 1, 1, 1, 1, 1] [2018-07-25 08:58:56,099 INFO L415 AbstractCegarLoop]: === Iteration 298 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:56,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1498971615, now seen corresponding path program 295 times [2018-07-25 08:58:56,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:56,716 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:56,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:58:56,717 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:58:56,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:58:56,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=10101, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:58:56,717 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand 102 states. [2018-07-25 08:58:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:58,205 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2018-07-25 08:58:58,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:58:58,205 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 203 [2018-07-25 08:58:58,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:58,206 INFO L225 Difference]: With dead ends: 308 [2018-07-25 08:58:58,206 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:58:58,207 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=10101, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:58:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:58:58,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 206. [2018-07-25 08:58:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:58:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 208 transitions. [2018-07-25 08:58:58,416 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 208 transitions. Word has length 203 [2018-07-25 08:58:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:58,416 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 208 transitions. [2018-07-25 08:58:58,417 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:58:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 208 transitions. [2018-07-25 08:58:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:58:58,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:58,417 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1, 1, 1] [2018-07-25 08:58:58,417 INFO L415 AbstractCegarLoop]: === Iteration 299 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:58,417 INFO L82 PathProgramCache]: Analyzing trace with hash 776458669, now seen corresponding path program 296 times [2018-07-25 08:58:58,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 5050 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:58,915 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:58,915 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:58:58,915 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:58:58,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:58:58,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:58:58,916 INFO L87 Difference]: Start difference. First operand 206 states and 208 transitions. Second operand 103 states. [2018-07-25 08:58:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:59,575 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2018-07-25 08:58:59,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:58:59,575 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-25 08:58:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:59,576 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:58:59,576 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:58:59,577 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:58:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:58:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:58:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:58:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 08:58:59,781 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 204 [2018-07-25 08:58:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:59,781 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 08:58:59,781 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:58:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 08:58:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:58:59,782 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:59,782 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1, 1, 1] [2018-07-25 08:58:59,782 INFO L415 AbstractCegarLoop]: === Iteration 300 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:59,782 INFO L82 PathProgramCache]: Analyzing trace with hash 112139847, now seen corresponding path program 297 times [2018-07-25 08:58:59,782 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 5050 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:00,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:00,289 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:59:00,289 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:59:00,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:59:00,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:59:00,290 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 103 states. [2018-07-25 08:59:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:00,578 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2018-07-25 08:59:00,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:59:00,579 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-25 08:59:00,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:00,579 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:59:00,579 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:59:00,580 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:59:00,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:59:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 08:59:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:59:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2018-07-25 08:59:00,786 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 204 [2018-07-25 08:59:00,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:00,786 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2018-07-25 08:59:00,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:59:00,786 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2018-07-25 08:59:00,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 08:59:00,787 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:00,787 INFO L354 BasicCegarLoop]: trace histogram [100, 100, 1, 1, 1, 1, 1] [2018-07-25 08:59:00,787 INFO L415 AbstractCegarLoop]: === Iteration 301 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:00,787 INFO L82 PathProgramCache]: Analyzing trace with hash -818693561, now seen corresponding path program 298 times [2018-07-25 08:59:00,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:01,534 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:01,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:59:01,534 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:59:01,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:59:01,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:59:01,535 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand 103 states. [2018-07-25 08:59:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:03,047 INFO L93 Difference]: Finished difference Result 311 states and 313 transitions. [2018-07-25 08:59:03,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:59:03,047 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 205 [2018-07-25 08:59:03,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:03,048 INFO L225 Difference]: With dead ends: 311 [2018-07-25 08:59:03,048 INFO L226 Difference]: Without dead ends: 308 [2018-07-25 08:59:03,048 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:59:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-07-25 08:59:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 208. [2018-07-25 08:59:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:59:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2018-07-25 08:59:03,263 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 205 [2018-07-25 08:59:03,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:03,263 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2018-07-25 08:59:03,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:59:03,264 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2018-07-25 08:59:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:59:03,264 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:03,264 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1, 1, 1] [2018-07-25 08:59:03,264 INFO L415 AbstractCegarLoop]: === Iteration 302 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:03,264 INFO L82 PathProgramCache]: Analyzing trace with hash 390241863, now seen corresponding path program 299 times [2018-07-25 08:59:03,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 5151 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:03,792 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:03,792 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:59:03,793 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:59:03,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:59:03,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:59:03,794 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand 104 states. [2018-07-25 08:59:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:04,365 INFO L93 Difference]: Finished difference Result 312 states and 314 transitions. [2018-07-25 08:59:04,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:59:04,365 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:59:04,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:04,365 INFO L225 Difference]: With dead ends: 312 [2018-07-25 08:59:04,366 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:59:04,366 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:59:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:59:04,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:59:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:59:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 08:59:04,613 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 206 [2018-07-25 08:59:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:04,613 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 08:59:04,613 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:59:04,614 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 08:59:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:59:04,614 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:04,614 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1, 1, 1] [2018-07-25 08:59:04,615 INFO L415 AbstractCegarLoop]: === Iteration 303 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:04,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1271194861, now seen corresponding path program 300 times [2018-07-25 08:59:04,615 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 5151 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:05,103 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:05,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:59:05,103 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:59:05,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:59:05,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:59:05,105 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 104 states. [2018-07-25 08:59:05,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:05,437 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2018-07-25 08:59:05,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:59:05,437 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:59:05,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:05,437 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:59:05,437 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:59:05,438 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:59:05,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:59:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 08:59:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:59:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2018-07-25 08:59:05,647 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 206 [2018-07-25 08:59:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:05,647 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2018-07-25 08:59:05,647 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:59:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2018-07-25 08:59:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:59:05,648 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:05,648 INFO L354 BasicCegarLoop]: trace histogram [101, 101, 1, 1, 1, 1, 1] [2018-07-25 08:59:05,648 INFO L415 AbstractCegarLoop]: === Iteration 304 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:05,648 INFO L82 PathProgramCache]: Analyzing trace with hash 752273505, now seen corresponding path program 301 times [2018-07-25 08:59:05,648 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:06,340 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:06,340 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:59:06,341 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:59:06,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:59:06,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=10507, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:59:06,342 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand 104 states. [2018-07-25 08:59:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:07,891 INFO L93 Difference]: Finished difference Result 314 states and 316 transitions. [2018-07-25 08:59:07,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:59:07,891 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 207 [2018-07-25 08:59:07,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:07,892 INFO L225 Difference]: With dead ends: 314 [2018-07-25 08:59:07,892 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:59:07,893 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=10507, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:59:07,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:59:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 210. [2018-07-25 08:59:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:59:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 212 transitions. [2018-07-25 08:59:08,112 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 212 transitions. Word has length 207 [2018-07-25 08:59:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:08,112 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 212 transitions. [2018-07-25 08:59:08,112 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:59:08,112 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 212 transitions. [2018-07-25 08:59:08,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:59:08,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:08,113 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1, 1, 1] [2018-07-25 08:59:08,113 INFO L415 AbstractCegarLoop]: === Iteration 305 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:08,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1845580653, now seen corresponding path program 302 times [2018-07-25 08:59:08,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 5253 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:08,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:08,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:59:08,595 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:59:08,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:59:08,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:59:08,596 INFO L87 Difference]: Start difference. First operand 210 states and 212 transitions. Second operand 105 states. [2018-07-25 08:59:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:09,323 INFO L93 Difference]: Finished difference Result 315 states and 317 transitions. [2018-07-25 08:59:09,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:59:09,323 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-25 08:59:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:09,324 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:59:09,324 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:59:09,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:59:09,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:59:09,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:59:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:59:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-25 08:59:09,539 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 208 [2018-07-25 08:59:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:09,539 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-25 08:59:09,539 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:59:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-25 08:59:09,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:59:09,539 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:09,540 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1, 1, 1] [2018-07-25 08:59:09,540 INFO L415 AbstractCegarLoop]: === Iteration 306 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:09,540 INFO L82 PathProgramCache]: Analyzing trace with hash -909647481, now seen corresponding path program 303 times [2018-07-25 08:59:09,540 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 5253 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:10,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:10,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:59:10,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:59:10,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:59:10,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:59:10,106 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 105 states. [2018-07-25 08:59:10,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:10,384 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-07-25 08:59:10,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:59:10,384 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-25 08:59:10,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:10,385 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:59:10,385 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 08:59:10,385 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:59:10,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 08:59:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 08:59:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:59:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2018-07-25 08:59:10,600 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 208 [2018-07-25 08:59:10,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:10,600 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2018-07-25 08:59:10,600 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:59:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2018-07-25 08:59:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:59:10,601 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:10,601 INFO L354 BasicCegarLoop]: trace histogram [102, 102, 1, 1, 1, 1, 1] [2018-07-25 08:59:10,601 INFO L415 AbstractCegarLoop]: === Iteration 307 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:10,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1865637639, now seen corresponding path program 304 times [2018-07-25 08:59:10,601 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:11,340 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:11,340 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:59:11,340 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:59:11,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:59:11,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:59:11,341 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 105 states. [2018-07-25 08:59:12,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:12,921 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2018-07-25 08:59:12,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:59:12,921 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 209 [2018-07-25 08:59:12,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:12,921 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:59:12,921 INFO L226 Difference]: Without dead ends: 314 [2018-07-25 08:59:12,922 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:59:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-07-25 08:59:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 212. [2018-07-25 08:59:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:59:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 214 transitions. [2018-07-25 08:59:13,147 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 214 transitions. Word has length 209 [2018-07-25 08:59:13,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:13,147 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 214 transitions. [2018-07-25 08:59:13,147 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:59:13,147 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 214 transitions. [2018-07-25 08:59:13,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:59:13,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:13,148 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1, 1, 1] [2018-07-25 08:59:13,148 INFO L415 AbstractCegarLoop]: === Iteration 308 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:13,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2000130439, now seen corresponding path program 305 times [2018-07-25 08:59:13,148 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 5356 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:13,693 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:13,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:59:13,693 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:59:13,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:59:13,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:59:13,694 INFO L87 Difference]: Start difference. First operand 212 states and 214 transitions. Second operand 106 states. [2018-07-25 08:59:14,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:14,435 INFO L93 Difference]: Finished difference Result 318 states and 320 transitions. [2018-07-25 08:59:14,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:59:14,435 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:59:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:14,435 INFO L225 Difference]: With dead ends: 318 [2018-07-25 08:59:14,435 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:59:14,436 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:59:14,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:59:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:59:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:59:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 08:59:14,651 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 210 [2018-07-25 08:59:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:14,651 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 08:59:14,651 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:59:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 08:59:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:59:14,652 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:14,652 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1, 1, 1] [2018-07-25 08:59:14,652 INFO L415 AbstractCegarLoop]: === Iteration 309 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:14,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1807563091, now seen corresponding path program 306 times [2018-07-25 08:59:14,652 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 5356 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:15,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:15,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:59:15,232 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:59:15,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:59:15,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:59:15,233 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 106 states. [2018-07-25 08:59:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:15,504 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2018-07-25 08:59:15,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:59:15,504 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:59:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:15,504 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:59:15,504 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:59:15,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:59:15,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:59:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 08:59:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:59:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 213 transitions. [2018-07-25 08:59:15,701 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 213 transitions. Word has length 210 [2018-07-25 08:59:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:15,702 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 213 transitions. [2018-07-25 08:59:15,702 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:59:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 213 transitions. [2018-07-25 08:59:15,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 08:59:15,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:15,703 INFO L354 BasicCegarLoop]: trace histogram [103, 103, 1, 1, 1, 1, 1] [2018-07-25 08:59:15,703 INFO L415 AbstractCegarLoop]: === Iteration 310 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash -199942495, now seen corresponding path program 307 times [2018-07-25 08:59:15,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:16,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:16,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:59:16,405 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:59:16,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:59:16,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=10921, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:59:16,406 INFO L87 Difference]: Start difference. First operand 212 states and 213 transitions. Second operand 106 states. [2018-07-25 08:59:17,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:17,946 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2018-07-25 08:59:17,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:59:17,946 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 211 [2018-07-25 08:59:17,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:17,946 INFO L225 Difference]: With dead ends: 320 [2018-07-25 08:59:17,946 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:59:17,947 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=10921, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:59:17,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:59:18,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 214. [2018-07-25 08:59:18,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:59:18,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 216 transitions. [2018-07-25 08:59:18,173 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 216 transitions. Word has length 211 [2018-07-25 08:59:18,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:18,173 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 216 transitions. [2018-07-25 08:59:18,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:59:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 216 transitions. [2018-07-25 08:59:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:59:18,174 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:18,174 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1, 1, 1] [2018-07-25 08:59:18,174 INFO L415 AbstractCegarLoop]: === Iteration 311 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:18,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1903311571, now seen corresponding path program 308 times [2018-07-25 08:59:18,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 5460 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:18,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:18,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:59:18,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:59:18,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:59:18,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:59:18,765 INFO L87 Difference]: Start difference. First operand 214 states and 216 transitions. Second operand 107 states. [2018-07-25 08:59:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:19,435 INFO L93 Difference]: Finished difference Result 321 states and 323 transitions. [2018-07-25 08:59:19,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:59:19,435 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-25 08:59:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:19,436 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:59:19,436 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:59:19,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:59:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:59:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:59:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:59:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 08:59:19,652 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 212 [2018-07-25 08:59:19,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:19,652 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 08:59:19,652 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:59:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 08:59:19,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:59:19,653 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:19,653 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1, 1, 1] [2018-07-25 08:59:19,653 INFO L415 AbstractCegarLoop]: === Iteration 312 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:19,653 INFO L82 PathProgramCache]: Analyzing trace with hash 317273287, now seen corresponding path program 309 times [2018-07-25 08:59:19,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 5460 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:20,162 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:20,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:59:20,162 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:59:20,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:59:20,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:59:20,163 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 107 states. [2018-07-25 08:59:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:20,427 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2018-07-25 08:59:20,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:59:20,427 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-25 08:59:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:20,428 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:59:20,428 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:59:20,428 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:59:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:59:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 08:59:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:59:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2018-07-25 08:59:20,625 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 212 [2018-07-25 08:59:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:20,625 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2018-07-25 08:59:20,625 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:59:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2018-07-25 08:59:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:59:20,626 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:20,626 INFO L354 BasicCegarLoop]: trace histogram [104, 104, 1, 1, 1, 1, 1] [2018-07-25 08:59:20,626 INFO L415 AbstractCegarLoop]: === Iteration 313 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:20,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1245475783, now seen corresponding path program 310 times [2018-07-25 08:59:20,626 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:21,349 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:21,349 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:59:21,350 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:59:21,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:59:21,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:59:21,350 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 107 states. [2018-07-25 08:59:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:22,962 INFO L93 Difference]: Finished difference Result 323 states and 325 transitions. [2018-07-25 08:59:22,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:59:22,962 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 213 [2018-07-25 08:59:22,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:22,963 INFO L225 Difference]: With dead ends: 323 [2018-07-25 08:59:22,963 INFO L226 Difference]: Without dead ends: 320 [2018-07-25 08:59:22,963 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:59:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-25 08:59:23,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 216. [2018-07-25 08:59:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:59:23,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 218 transitions. [2018-07-25 08:59:23,194 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 218 transitions. Word has length 213 [2018-07-25 08:59:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:23,194 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 218 transitions. [2018-07-25 08:59:23,194 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:59:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 218 transitions. [2018-07-25 08:59:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:59:23,195 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:23,195 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1, 1, 1] [2018-07-25 08:59:23,195 INFO L415 AbstractCegarLoop]: === Iteration 314 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:23,195 INFO L82 PathProgramCache]: Analyzing trace with hash -45017913, now seen corresponding path program 311 times [2018-07-25 08:59:23,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 5565 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:23,749 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:23,749 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:59:23,749 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:59:23,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:59:23,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:59:23,750 INFO L87 Difference]: Start difference. First operand 216 states and 218 transitions. Second operand 108 states. [2018-07-25 08:59:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:24,574 INFO L93 Difference]: Finished difference Result 324 states and 326 transitions. [2018-07-25 08:59:24,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:59:24,574 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:59:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:24,575 INFO L225 Difference]: With dead ends: 324 [2018-07-25 08:59:24,575 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:59:24,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:59:24,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:59:24,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:59:24,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:59:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-25 08:59:24,819 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 214 [2018-07-25 08:59:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:24,819 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-25 08:59:24,819 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:59:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-25 08:59:24,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:59:24,820 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:24,820 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1, 1, 1] [2018-07-25 08:59:24,820 INFO L415 AbstractCegarLoop]: === Iteration 315 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:24,820 INFO L82 PathProgramCache]: Analyzing trace with hash 73635949, now seen corresponding path program 312 times [2018-07-25 08:59:24,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 5565 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:25,420 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:25,420 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:59:25,420 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:59:25,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:59:25,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:59:25,421 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 108 states. [2018-07-25 08:59:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:25,743 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2018-07-25 08:59:25,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:59:25,743 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:59:25,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:25,744 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:59:25,744 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 08:59:25,745 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:59:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 08:59:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 08:59:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:59:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2018-07-25 08:59:25,971 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 214 [2018-07-25 08:59:25,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:25,971 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2018-07-25 08:59:25,971 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:59:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2018-07-25 08:59:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:59:25,972 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:25,972 INFO L354 BasicCegarLoop]: trace histogram [105, 105, 1, 1, 1, 1, 1] [2018-07-25 08:59:25,972 INFO L415 AbstractCegarLoop]: === Iteration 316 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2012314399, now seen corresponding path program 313 times [2018-07-25 08:59:25,972 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:26,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:26,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:59:26,810 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:59:26,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:59:26,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=11343, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:59:26,811 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand 108 states. [2018-07-25 08:59:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:28,483 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2018-07-25 08:59:28,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:59:28,484 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 215 [2018-07-25 08:59:28,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:28,484 INFO L225 Difference]: With dead ends: 326 [2018-07-25 08:59:28,484 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:59:28,485 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=11343, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:59:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:59:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 218. [2018-07-25 08:59:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:59:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions. [2018-07-25 08:59:28,720 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 215 [2018-07-25 08:59:28,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:28,720 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 220 transitions. [2018-07-25 08:59:28,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:59:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 220 transitions. [2018-07-25 08:59:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:59:28,721 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:28,721 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1, 1, 1] [2018-07-25 08:59:28,721 INFO L415 AbstractCegarLoop]: === Iteration 317 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:28,721 INFO L82 PathProgramCache]: Analyzing trace with hash 2042701549, now seen corresponding path program 314 times [2018-07-25 08:59:28,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 5671 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:29,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:29,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:59:29,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:59:29,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:59:29,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:59:29,336 INFO L87 Difference]: Start difference. First operand 218 states and 220 transitions. Second operand 109 states. [2018-07-25 08:59:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:30,023 INFO L93 Difference]: Finished difference Result 327 states and 329 transitions. [2018-07-25 08:59:30,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:59:30,024 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-25 08:59:30,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:30,024 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:59:30,024 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:59:30,024 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:59:30,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:59:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:59:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:59:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 08:59:30,226 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 216 [2018-07-25 08:59:30,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:30,226 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 08:59:30,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:59:30,226 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 08:59:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:59:30,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:30,227 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1, 1, 1] [2018-07-25 08:59:30,227 INFO L415 AbstractCegarLoop]: === Iteration 318 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:30,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1426003975, now seen corresponding path program 315 times [2018-07-25 08:59:30,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 5671 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:30,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:30,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:59:30,812 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:59:30,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:59:30,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:59:30,813 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 109 states. [2018-07-25 08:59:31,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:31,128 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-07-25 08:59:31,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:59:31,128 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-25 08:59:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:31,129 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:59:31,129 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:59:31,130 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:59:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:59:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 08:59:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:59:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2018-07-25 08:59:31,361 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 216 [2018-07-25 08:59:31,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:31,362 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2018-07-25 08:59:31,362 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:59:31,362 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2018-07-25 08:59:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 08:59:31,362 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:31,362 INFO L354 BasicCegarLoop]: trace histogram [106, 106, 1, 1, 1, 1, 1] [2018-07-25 08:59:31,362 INFO L415 AbstractCegarLoop]: === Iteration 319 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:31,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1256388743, now seen corresponding path program 316 times [2018-07-25 08:59:31,363 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:32,255 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:32,255 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:59:32,256 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:59:32,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:59:32,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:59:32,256 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand 109 states. [2018-07-25 08:59:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:33,810 INFO L93 Difference]: Finished difference Result 329 states and 331 transitions. [2018-07-25 08:59:33,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:59:33,810 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 217 [2018-07-25 08:59:33,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:33,811 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:59:33,811 INFO L226 Difference]: Without dead ends: 326 [2018-07-25 08:59:33,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:59:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-07-25 08:59:34,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 220. [2018-07-25 08:59:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:59:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 222 transitions. [2018-07-25 08:59:34,024 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 222 transitions. Word has length 217 [2018-07-25 08:59:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:34,025 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 222 transitions. [2018-07-25 08:59:34,025 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:59:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 222 transitions. [2018-07-25 08:59:34,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:59:34,025 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:34,025 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1, 1, 1] [2018-07-25 08:59:34,025 INFO L415 AbstractCegarLoop]: === Iteration 320 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:34,026 INFO L82 PathProgramCache]: Analyzing trace with hash 293283847, now seen corresponding path program 317 times [2018-07-25 08:59:34,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 5778 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:34,501 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:34,501 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:59:34,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:59:34,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:59:34,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:59:34,503 INFO L87 Difference]: Start difference. First operand 220 states and 222 transitions. Second operand 110 states. [2018-07-25 08:59:35,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:35,345 INFO L93 Difference]: Finished difference Result 330 states and 332 transitions. [2018-07-25 08:59:35,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:59:35,345 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:59:35,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:35,345 INFO L225 Difference]: With dead ends: 330 [2018-07-25 08:59:35,345 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:59:35,346 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:59:35,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:59:35,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:59:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:59:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 08:59:35,581 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 218 [2018-07-25 08:59:35,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:35,581 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 08:59:35,581 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:59:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 08:59:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:59:35,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:35,582 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1, 1, 1] [2018-07-25 08:59:35,582 INFO L415 AbstractCegarLoop]: === Iteration 321 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:35,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1644471763, now seen corresponding path program 318 times [2018-07-25 08:59:35,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 5778 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:36,218 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:36,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:59:36,218 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:59:36,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:59:36,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:59:36,219 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 110 states. [2018-07-25 08:59:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:36,535 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2018-07-25 08:59:36,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:59:36,535 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:59:36,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:36,536 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:59:36,536 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:59:36,536 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:59:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:59:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 08:59:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:59:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 221 transitions. [2018-07-25 08:59:36,743 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 221 transitions. Word has length 218 [2018-07-25 08:59:36,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:36,743 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 221 transitions. [2018-07-25 08:59:36,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:59:36,743 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 221 transitions. [2018-07-25 08:59:36,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:59:36,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:36,744 INFO L354 BasicCegarLoop]: trace histogram [107, 107, 1, 1, 1, 1, 1] [2018-07-25 08:59:36,744 INFO L415 AbstractCegarLoop]: === Iteration 322 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:36,744 INFO L82 PathProgramCache]: Analyzing trace with hash 560921377, now seen corresponding path program 319 times [2018-07-25 08:59:36,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:37,568 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:37,568 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:59:37,568 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:59:37,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:59:37,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=11773, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:59:37,569 INFO L87 Difference]: Start difference. First operand 220 states and 221 transitions. Second operand 110 states. [2018-07-25 08:59:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:39,313 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2018-07-25 08:59:39,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:59:39,313 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 219 [2018-07-25 08:59:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:39,314 INFO L225 Difference]: With dead ends: 332 [2018-07-25 08:59:39,314 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 08:59:39,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=11773, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:59:39,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 08:59:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 222. [2018-07-25 08:59:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:59:39,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 224 transitions. [2018-07-25 08:59:39,547 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 224 transitions. Word has length 219 [2018-07-25 08:59:39,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:39,548 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 224 transitions. [2018-07-25 08:59:39,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:59:39,548 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 224 transitions. [2018-07-25 08:59:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:59:39,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:39,548 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1, 1, 1] [2018-07-25 08:59:39,548 INFO L415 AbstractCegarLoop]: === Iteration 323 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:39,549 INFO L82 PathProgramCache]: Analyzing trace with hash 208631981, now seen corresponding path program 320 times [2018-07-25 08:59:39,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 5886 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:40,100 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:40,100 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:59:40,100 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:59:40,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:59:40,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:59:40,101 INFO L87 Difference]: Start difference. First operand 222 states and 224 transitions. Second operand 111 states. [2018-07-25 08:59:40,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:40,696 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2018-07-25 08:59:40,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:59:40,696 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-25 08:59:40,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:40,696 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:59:40,696 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:59:40,697 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:59:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:59:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:59:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:59:40,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-25 08:59:40,910 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 220 [2018-07-25 08:59:40,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:40,910 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-25 08:59:40,911 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:59:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-25 08:59:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:59:40,911 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:40,911 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1, 1, 1] [2018-07-25 08:59:40,911 INFO L415 AbstractCegarLoop]: === Iteration 324 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:40,911 INFO L82 PathProgramCache]: Analyzing trace with hash 267750215, now seen corresponding path program 321 times [2018-07-25 08:59:40,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 5886 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:41,477 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:41,477 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:59:41,477 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:59:41,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:59:41,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:59:41,478 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 111 states. [2018-07-25 08:59:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:41,740 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-07-25 08:59:41,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:59:41,740 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-25 08:59:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:41,741 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:59:41,741 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 08:59:41,741 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:59:41,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 08:59:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 08:59:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:59:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2018-07-25 08:59:41,954 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 220 [2018-07-25 08:59:41,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:41,954 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2018-07-25 08:59:41,954 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:59:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2018-07-25 08:59:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:59:41,955 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:41,955 INFO L354 BasicCegarLoop]: trace histogram [108, 108, 1, 1, 1, 1, 1] [2018-07-25 08:59:41,955 INFO L415 AbstractCegarLoop]: === Iteration 325 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:41,955 INFO L82 PathProgramCache]: Analyzing trace with hash -289739449, now seen corresponding path program 322 times [2018-07-25 08:59:41,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:42,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:42,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:59:42,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:59:42,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:59:42,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:59:42,765 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 111 states. [2018-07-25 08:59:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:44,343 INFO L93 Difference]: Finished difference Result 335 states and 337 transitions. [2018-07-25 08:59:44,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:59:44,343 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 221 [2018-07-25 08:59:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:44,344 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:59:44,344 INFO L226 Difference]: Without dead ends: 332 [2018-07-25 08:59:44,345 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:59:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-07-25 08:59:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 224. [2018-07-25 08:59:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:59:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions. [2018-07-25 08:59:44,564 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 221 [2018-07-25 08:59:44,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:44,564 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 226 transitions. [2018-07-25 08:59:44,564 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:59:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 226 transitions. [2018-07-25 08:59:44,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:59:44,565 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:44,565 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1, 1, 1] [2018-07-25 08:59:44,565 INFO L415 AbstractCegarLoop]: === Iteration 326 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:44,565 INFO L82 PathProgramCache]: Analyzing trace with hash -392049849, now seen corresponding path program 323 times [2018-07-25 08:59:44,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:45,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 5995 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:45,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:45,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:59:45,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:59:45,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:59:45,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:59:45,157 INFO L87 Difference]: Start difference. First operand 224 states and 226 transitions. Second operand 112 states. [2018-07-25 08:59:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:45,861 INFO L93 Difference]: Finished difference Result 336 states and 338 transitions. [2018-07-25 08:59:45,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:59:45,861 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:59:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:45,862 INFO L225 Difference]: With dead ends: 336 [2018-07-25 08:59:45,862 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:59:45,863 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:59:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:59:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:59:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:59:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 08:59:46,077 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 222 [2018-07-25 08:59:46,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:46,077 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 08:59:46,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:59:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 08:59:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:59:46,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:46,078 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1, 1, 1] [2018-07-25 08:59:46,078 INFO L415 AbstractCegarLoop]: === Iteration 327 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:46,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1440615405, now seen corresponding path program 324 times [2018-07-25 08:59:46,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 5995 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:46,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:46,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:59:46,648 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:59:46,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:59:46,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:59:46,649 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 112 states. [2018-07-25 08:59:46,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:46,922 INFO L93 Difference]: Finished difference Result 227 states and 228 transitions. [2018-07-25 08:59:46,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:59:46,922 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:59:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:46,922 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:59:46,923 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:59:46,924 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:59:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:59:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 08:59:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:59:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2018-07-25 08:59:47,141 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 222 [2018-07-25 08:59:47,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:47,142 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2018-07-25 08:59:47,142 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:59:47,142 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2018-07-25 08:59:47,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 08:59:47,142 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:47,142 INFO L354 BasicCegarLoop]: trace histogram [109, 109, 1, 1, 1, 1, 1] [2018-07-25 08:59:47,142 INFO L415 AbstractCegarLoop]: === Iteration 328 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:47,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1709343073, now seen corresponding path program 325 times [2018-07-25 08:59:47,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:47,890 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:47,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:59:47,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:59:47,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:59:47,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=12211, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:59:47,891 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand 112 states. [2018-07-25 08:59:49,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:49,644 INFO L93 Difference]: Finished difference Result 338 states and 340 transitions. [2018-07-25 08:59:49,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:59:49,645 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 223 [2018-07-25 08:59:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:49,645 INFO L225 Difference]: With dead ends: 338 [2018-07-25 08:59:49,645 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:59:49,646 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=12211, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:59:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:59:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 226. [2018-07-25 08:59:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:59:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 228 transitions. [2018-07-25 08:59:49,916 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 228 transitions. Word has length 223 [2018-07-25 08:59:49,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:49,916 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 228 transitions. [2018-07-25 08:59:49,916 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:59:49,917 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 228 transitions. [2018-07-25 08:59:49,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:59:49,917 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:49,917 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1, 1, 1] [2018-07-25 08:59:49,917 INFO L415 AbstractCegarLoop]: === Iteration 329 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:49,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1449966189, now seen corresponding path program 326 times [2018-07-25 08:59:49,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 6105 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:50,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:50,510 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:59:50,510 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:59:50,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:59:50,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:59:50,512 INFO L87 Difference]: Start difference. First operand 226 states and 228 transitions. Second operand 113 states. [2018-07-25 08:59:51,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:51,117 INFO L93 Difference]: Finished difference Result 339 states and 341 transitions. [2018-07-25 08:59:51,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:59:51,117 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-25 08:59:51,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:51,118 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:59:51,118 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:59:51,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:59:51,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:59:51,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:59:51,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:59:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 08:59:51,339 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 224 [2018-07-25 08:59:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:51,339 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 08:59:51,339 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:59:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 08:59:51,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:59:51,339 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:51,340 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1, 1, 1] [2018-07-25 08:59:51,340 INFO L415 AbstractCegarLoop]: === Iteration 330 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:51,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1866953081, now seen corresponding path program 327 times [2018-07-25 08:59:51,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 6105 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:51,954 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:51,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:59:51,954 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:59:51,955 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:59:51,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:59:51,955 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 113 states. [2018-07-25 08:59:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:52,311 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-07-25 08:59:52,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:59:52,311 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-25 08:59:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:52,311 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:59:52,311 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:59:52,312 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:59:52,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:59:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 08:59:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:59:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2018-07-25 08:59:52,530 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 224 [2018-07-25 08:59:52,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:52,530 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2018-07-25 08:59:52,530 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:59:52,530 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2018-07-25 08:59:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:59:52,531 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:52,531 INFO L354 BasicCegarLoop]: trace histogram [110, 110, 1, 1, 1, 1, 1] [2018-07-25 08:59:52,531 INFO L415 AbstractCegarLoop]: === Iteration 331 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:52,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2041032185, now seen corresponding path program 328 times [2018-07-25 08:59:52,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:53,363 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:53,363 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:59:53,363 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:59:53,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:59:53,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=12433, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:59:53,364 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 113 states. [2018-07-25 08:59:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:55,044 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2018-07-25 08:59:55,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:59:55,044 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 225 [2018-07-25 08:59:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:55,044 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:59:55,044 INFO L226 Difference]: Without dead ends: 338 [2018-07-25 08:59:55,045 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=12433, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:59:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-07-25 08:59:55,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 228. [2018-07-25 08:59:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:59:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 230 transitions. [2018-07-25 08:59:55,304 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 230 transitions. Word has length 225 [2018-07-25 08:59:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:55,304 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 230 transitions. [2018-07-25 08:59:55,304 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:59:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 230 transitions. [2018-07-25 08:59:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:59:55,305 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:55,305 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1, 1, 1] [2018-07-25 08:59:55,305 INFO L415 AbstractCegarLoop]: === Iteration 332 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:55,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1152450183, now seen corresponding path program 329 times [2018-07-25 08:59:55,305 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 6216 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:56,003 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:56,003 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:59:56,003 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:59:56,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:59:56,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:59:56,005 INFO L87 Difference]: Start difference. First operand 228 states and 230 transitions. Second operand 114 states. [2018-07-25 08:59:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:56,714 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2018-07-25 08:59:56,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:59:56,714 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:59:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:56,715 INFO L225 Difference]: With dead ends: 342 [2018-07-25 08:59:56,715 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:59:56,716 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:59:56,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:59:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:59:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:59:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-25 08:59:56,967 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 226 [2018-07-25 08:59:56,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:56,967 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-25 08:59:56,967 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:59:56,968 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-25 08:59:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:59:56,968 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:56,968 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1, 1, 1] [2018-07-25 08:59:56,968 INFO L415 AbstractCegarLoop]: === Iteration 333 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:56,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1407167917, now seen corresponding path program 330 times [2018-07-25 08:59:56,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 6216 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:57,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:57,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:59:57,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:59:57,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:59:57,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:59:57,677 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 114 states. [2018-07-25 08:59:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:58,026 INFO L93 Difference]: Finished difference Result 231 states and 232 transitions. [2018-07-25 08:59:58,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:59:58,026 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:59:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:58,027 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:59:58,027 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 08:59:58,027 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:59:58,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 08:59:58,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 08:59:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:59:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 229 transitions. [2018-07-25 08:59:58,279 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 229 transitions. Word has length 226 [2018-07-25 08:59:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:58,279 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 229 transitions. [2018-07-25 08:59:58,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:59:58,279 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 229 transitions. [2018-07-25 08:59:58,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:59:58,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:58,280 INFO L354 BasicCegarLoop]: trace histogram [111, 111, 1, 1, 1, 1, 1] [2018-07-25 08:59:58,280 INFO L415 AbstractCegarLoop]: === Iteration 334 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:58,280 INFO L82 PathProgramCache]: Analyzing trace with hash 672470945, now seen corresponding path program 331 times [2018-07-25 08:59:58,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:59,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:59,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:59:59,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:59:59,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:59:59,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=12657, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:59:59,251 INFO L87 Difference]: Start difference. First operand 228 states and 229 transitions. Second operand 114 states. [2018-07-25 09:00:01,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:01,099 INFO L93 Difference]: Finished difference Result 344 states and 346 transitions. [2018-07-25 09:00:01,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 09:00:01,099 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 227 [2018-07-25 09:00:01,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:01,099 INFO L225 Difference]: With dead ends: 344 [2018-07-25 09:00:01,100 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 09:00:01,100 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=12657, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 09:00:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 09:00:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 230. [2018-07-25 09:00:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 09:00:01,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 232 transitions. [2018-07-25 09:00:01,354 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 232 transitions. Word has length 227 [2018-07-25 09:00:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:01,354 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 232 transitions. [2018-07-25 09:00:01,354 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 09:00:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 232 transitions. [2018-07-25 09:00:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 09:00:01,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:01,355 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1, 1, 1] [2018-07-25 09:00:01,355 INFO L415 AbstractCegarLoop]: === Iteration 335 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:01,355 INFO L82 PathProgramCache]: Analyzing trace with hash -628298707, now seen corresponding path program 332 times [2018-07-25 09:00:01,355 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 6328 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:01,921 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:01,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 09:00:01,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 09:00:01,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 09:00:01,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 09:00:01,923 INFO L87 Difference]: Start difference. First operand 230 states and 232 transitions. Second operand 115 states. [2018-07-25 09:00:02,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:02,577 INFO L93 Difference]: Finished difference Result 345 states and 347 transitions. [2018-07-25 09:00:02,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 09:00:02,577 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-25 09:00:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:02,578 INFO L225 Difference]: With dead ends: 345 [2018-07-25 09:00:02,578 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 09:00:02,579 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 09:00:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 09:00:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 09:00:02,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 09:00:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 09:00:02,830 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 228 [2018-07-25 09:00:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:02,830 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 09:00:02,830 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 09:00:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 09:00:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 09:00:02,831 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:02,831 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1, 1, 1] [2018-07-25 09:00:02,831 INFO L415 AbstractCegarLoop]: === Iteration 336 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:02,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1321983545, now seen corresponding path program 333 times [2018-07-25 09:00:02,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 6328 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:03,384 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:03,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 09:00:03,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 09:00:03,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 09:00:03,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 09:00:03,385 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 115 states. [2018-07-25 09:00:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:03,702 INFO L93 Difference]: Finished difference Result 233 states and 234 transitions. [2018-07-25 09:00:03,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 09:00:03,702 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-25 09:00:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:03,703 INFO L225 Difference]: With dead ends: 233 [2018-07-25 09:00:03,703 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 09:00:03,703 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 09:00:03,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 09:00:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 09:00:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 09:00:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2018-07-25 09:00:03,932 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 228 [2018-07-25 09:00:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:03,932 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 231 transitions. [2018-07-25 09:00:03,932 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 09:00:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 231 transitions. [2018-07-25 09:00:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 09:00:03,933 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:03,933 INFO L354 BasicCegarLoop]: trace histogram [112, 112, 1, 1, 1, 1, 1] [2018-07-25 09:00:03,933 INFO L415 AbstractCegarLoop]: === Iteration 337 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:03,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1968121543, now seen corresponding path program 334 times [2018-07-25 09:00:03,933 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:04,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:04,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 09:00:04,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 09:00:04,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 09:00:04,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=12883, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 09:00:04,733 INFO L87 Difference]: Start difference. First operand 230 states and 231 transitions. Second operand 115 states. [2018-07-25 09:00:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:06,550 INFO L93 Difference]: Finished difference Result 347 states and 349 transitions. [2018-07-25 09:00:06,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 09:00:06,550 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 229 [2018-07-25 09:00:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:06,551 INFO L225 Difference]: With dead ends: 347 [2018-07-25 09:00:06,551 INFO L226 Difference]: Without dead ends: 344 [2018-07-25 09:00:06,552 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=12883, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 09:00:06,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-07-25 09:00:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 232. [2018-07-25 09:00:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 09:00:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 234 transitions. [2018-07-25 09:00:06,819 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 234 transitions. Word has length 229 [2018-07-25 09:00:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:06,820 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 234 transitions. [2018-07-25 09:00:06,820 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 09:00:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 234 transitions. [2018-07-25 09:00:06,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 09:00:06,820 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:06,820 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1, 1, 1] [2018-07-25 09:00:06,820 INFO L415 AbstractCegarLoop]: === Iteration 338 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:06,821 INFO L82 PathProgramCache]: Analyzing trace with hash 882164167, now seen corresponding path program 335 times [2018-07-25 09:00:06,821 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 6441 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:07,364 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:07,364 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 09:00:07,364 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 09:00:07,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 09:00:07,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 09:00:07,365 INFO L87 Difference]: Start difference. First operand 232 states and 234 transitions. Second operand 116 states. [2018-07-25 09:00:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:08,029 INFO L93 Difference]: Finished difference Result 348 states and 350 transitions. [2018-07-25 09:00:08,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 09:00:08,029 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 09:00:08,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:08,030 INFO L225 Difference]: With dead ends: 348 [2018-07-25 09:00:08,030 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 09:00:08,031 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 09:00:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 09:00:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 09:00:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 09:00:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 09:00:08,263 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 230 [2018-07-25 09:00:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:08,263 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 09:00:08,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 09:00:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 09:00:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 09:00:08,263 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:08,263 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1, 1, 1] [2018-07-25 09:00:08,264 INFO L415 AbstractCegarLoop]: === Iteration 339 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash 852770669, now seen corresponding path program 336 times [2018-07-25 09:00:08,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 6441 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:08,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:08,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 09:00:08,830 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 09:00:08,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 09:00:08,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 09:00:08,831 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 116 states. [2018-07-25 09:00:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:09,125 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2018-07-25 09:00:09,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 09:00:09,126 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 09:00:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:09,126 INFO L225 Difference]: With dead ends: 235 [2018-07-25 09:00:09,126 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 09:00:09,127 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 09:00:09,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 09:00:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 09:00:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 09:00:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2018-07-25 09:00:09,358 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 230 [2018-07-25 09:00:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:09,358 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2018-07-25 09:00:09,358 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 09:00:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2018-07-25 09:00:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 09:00:09,359 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:09,359 INFO L354 BasicCegarLoop]: trace histogram [113, 113, 1, 1, 1, 1, 1] [2018-07-25 09:00:09,359 INFO L415 AbstractCegarLoop]: === Iteration 340 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:09,359 INFO L82 PathProgramCache]: Analyzing trace with hash 666025441, now seen corresponding path program 337 times [2018-07-25 09:00:09,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:10,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:10,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 09:00:10,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 09:00:10,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 09:00:10,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=13111, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 09:00:10,200 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand 116 states. [2018-07-25 09:00:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:12,044 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2018-07-25 09:00:12,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 09:00:12,044 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 231 [2018-07-25 09:00:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:12,045 INFO L225 Difference]: With dead ends: 350 [2018-07-25 09:00:12,045 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 09:00:12,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=13111, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 09:00:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 09:00:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 234. [2018-07-25 09:00:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 09:00:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 236 transitions. [2018-07-25 09:00:12,317 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 236 transitions. Word has length 231 [2018-07-25 09:00:12,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:12,317 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 236 transitions. [2018-07-25 09:00:12,317 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 09:00:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 236 transitions. [2018-07-25 09:00:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 09:00:12,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:12,318 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1, 1, 1] [2018-07-25 09:00:12,318 INFO L415 AbstractCegarLoop]: === Iteration 341 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:12,318 INFO L82 PathProgramCache]: Analyzing trace with hash -828109331, now seen corresponding path program 338 times [2018-07-25 09:00:12,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 6555 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:13,000 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:13,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 09:00:13,001 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 09:00:13,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 09:00:13,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 09:00:13,002 INFO L87 Difference]: Start difference. First operand 234 states and 236 transitions. Second operand 117 states. [2018-07-25 09:00:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:13,789 INFO L93 Difference]: Finished difference Result 351 states and 353 transitions. [2018-07-25 09:00:13,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 09:00:13,789 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-25 09:00:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:13,790 INFO L225 Difference]: With dead ends: 351 [2018-07-25 09:00:13,790 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 09:00:13,790 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 09:00:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 09:00:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 09:00:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 09:00:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-25 09:00:14,054 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 232 [2018-07-25 09:00:14,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:14,054 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-25 09:00:14,054 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 09:00:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-25 09:00:14,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 09:00:14,055 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:14,055 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1, 1, 1] [2018-07-25 09:00:14,055 INFO L415 AbstractCegarLoop]: === Iteration 342 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:14,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1739307769, now seen corresponding path program 339 times [2018-07-25 09:00:14,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 6555 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:14,739 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:14,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 09:00:14,740 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 09:00:14,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 09:00:14,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 09:00:14,741 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 117 states. [2018-07-25 09:00:15,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:15,111 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-07-25 09:00:15,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 09:00:15,112 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-25 09:00:15,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:15,112 INFO L225 Difference]: With dead ends: 237 [2018-07-25 09:00:15,112 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 09:00:15,113 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 09:00:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 09:00:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 09:00:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 09:00:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2018-07-25 09:00:15,380 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 232 [2018-07-25 09:00:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:15,380 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2018-07-25 09:00:15,380 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 09:00:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2018-07-25 09:00:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 09:00:15,381 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:15,381 INFO L354 BasicCegarLoop]: trace histogram [114, 114, 1, 1, 1, 1, 1] [2018-07-25 09:00:15,381 INFO L415 AbstractCegarLoop]: === Iteration 343 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:15,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1915972487, now seen corresponding path program 340 times [2018-07-25 09:00:15,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:16,348 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:16,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 09:00:16,348 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 09:00:16,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 09:00:16,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=13341, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 09:00:16,349 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 117 states. [2018-07-25 09:00:18,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:18,221 INFO L93 Difference]: Finished difference Result 353 states and 355 transitions. [2018-07-25 09:00:18,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 09:00:18,222 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 233 [2018-07-25 09:00:18,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:18,222 INFO L225 Difference]: With dead ends: 353 [2018-07-25 09:00:18,222 INFO L226 Difference]: Without dead ends: 350 [2018-07-25 09:00:18,223 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=13341, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 09:00:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-07-25 09:00:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 236. [2018-07-25 09:00:18,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 09:00:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 238 transitions. [2018-07-25 09:00:18,503 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 238 transitions. Word has length 233 [2018-07-25 09:00:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:18,503 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 238 transitions. [2018-07-25 09:00:18,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 09:00:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 238 transitions. [2018-07-25 09:00:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 09:00:18,504 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:18,504 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1, 1, 1] [2018-07-25 09:00:18,504 INFO L415 AbstractCegarLoop]: === Iteration 344 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:18,504 INFO L82 PathProgramCache]: Analyzing trace with hash -734456569, now seen corresponding path program 341 times [2018-07-25 09:00:18,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 09:00:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13225 backedges. 6670 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 09:00:19,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 09:00:19,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 09:00:19,180 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 09:00:19,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 09:00:19,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 09:00:19,181 INFO L87 Difference]: Start difference. First operand 236 states and 238 transitions. Second operand 118 states. [2018-07-25 09:00:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 09:00:19,844 INFO L93 Difference]: Finished difference Result 354 states and 356 transitions. [2018-07-25 09:00:19,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 09:00:19,845 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 09:00:19,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 09:00:19,845 INFO L225 Difference]: With dead ends: 354 [2018-07-25 09:00:19,845 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 09:00:19,846 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 09:00:19,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 09:00:20,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 09:00:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 09:00:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 09:00:20,120 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 234 [2018-07-25 09:00:20,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 09:00:20,120 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 09:00:20,120 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 09:00:20,120 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 09:00:20,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 09:00:20,121 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 09:00:20,121 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1, 1, 1] [2018-07-25 09:00:20,121 INFO L415 AbstractCegarLoop]: === Iteration 345 === [MainErr1ASSERT_VIOLATIONASSERT, MainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 09:00:20,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1083162925, now seen corresponding path program 342 times [2018-07-25 09:00:20,122 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 09:00:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 09:00:20,735 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 09:00:20,740 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 09:00:20,740 INFO L202 PluginConnector]: Adding new model doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 09:00:20 BoogieIcfgContainer [2018-07-25 09:00:20,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 09:00:20,741 INFO L168 Benchmark]: Toolchain (without parser) took 254797.05 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 660.2 MB. Max. memory is 7.1 GB. [2018-07-25 09:00:20,742 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 09:00:20,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 09:00:20,743 INFO L168 Benchmark]: Boogie Preprocessor took 29.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 09:00:20,743 INFO L168 Benchmark]: RCFGBuilder took 259.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 09:00:20,743 INFO L168 Benchmark]: TraceAbstraction took 254457.48 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 649.7 MB. Max. memory is 7.1 GB. [2018-07-25 09:00:20,745 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 259.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254457.48 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 649.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 24]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 24). Cancelled while BasicCegarLoop was analyzing trace of length 235 with TraceHistMax 115, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 110 known predicates. - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 23). Cancelled while BasicCegarLoop was analyzing trace of length 235 with TraceHistMax 115, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 110 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. TIMEOUT Result, 254.3s OverallTime, 345 OverallIterations, 115 TraceHistogramMax, 128.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1379 SDtfs, 3845 SDslu, 23766 SDs, 0 SdLazy, 1201061 SolverSat, 7354 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39902 GetRequests, 19665 SyntacticMatches, 114 SemanticMatches, 20123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13110 ImplicationChecksByTransitivity, 42.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=343, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 33.9s AutomataMinimizationTime, 344 MinimizatonAttempts, 6555 StatesRemovedByMinimization, 114 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 28.0s SatisfiabilityAnalysisTime, 55.4s InterpolantComputationTime, 41049 NumberOfCodeBlocks, 41049 NumberOfCodeBlocksAsserted, 344 NumberOfCheckSat, 40705 ConstructedInterpolants, 0 QuantifiedInterpolants, 27325723 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 344 InterpolantComputations, 3 PerfectInterpolantSequences, 513589/1520874 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/doubleLoopUniformIterations.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_09-00-20-754.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/doubleLoopUniformIterations.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_09-00-20-754.csv Completed graceful shutdown